?experimental

experimental 發(fā)音

英：[?k?sper??ment(?)l]　　美：[?k?sper??ment(?)l]

英：　　美：

experimental 中文意思翻譯

experimental 網(wǎng)絡(luò)釋義

adj. 實(shí)驗(yàn)的；根據(jù)實(shí)驗(yàn)的；試驗(yàn)性的

experimental 常用詞組

experimental result ─── 實(shí)驗(yàn)結(jié)果

experimental data ─── 實(shí)驗(yàn)數(shù)據(jù)；試驗(yàn)數(shù)據(jù)

experimental study ─── 試驗(yàn)研究；實(shí)驗(yàn)性研究

experimental 短語詞組

1、experimental agglutination reaction ─── [醫(yī)] 試探性凝集反應(yīng), 實(shí)驗(yàn)性凝集反應(yīng)

2、experimental design procedure ─── [計(jì)] 實(shí)驗(yàn)設(shè)計(jì)過程

3、experimental animal ─── [醫(yī)] 實(shí)驗(yàn)動(dòng)物

4、experimental data ─── [化] 實(shí)驗(yàn)數(shù)據(jù); 試驗(yàn)數(shù)據(jù)

5、experimental diabetes ─── [醫(yī)] 實(shí)驗(yàn)性糖尿

6、experimental error ─── [計(jì)] 試驗(yàn)誤差 ─── [醫(yī)] 實(shí)驗(yàn)誤差

7、experimental aerodonetics ─── [機(jī)] 實(shí)驗(yàn)滑翔學(xué)

8、experimental data base ─── [計(jì)] 試驗(yàn)數(shù)據(jù)庫

9、experimental aeroplane ─── [機(jī)] 實(shí)驗(yàn)用飛機(jī)

10、agricultural experimental station ─── [經(jīng)] 農(nóng)業(yè)試驗(yàn)場

11、experimental epidemiology ─── [醫(yī)] 實(shí)驗(yàn)流行病學(xué)

12、experimental disease ─── [醫(yī)] 實(shí)驗(yàn)病

13、experimental evidence ─── [法] 經(jīng)驗(yàn)證據(jù)

14、experimental condition ─── 試驗(yàn)條件

15、experimental design ─── [計(jì)] 實(shí)驗(yàn)設(shè)計(jì), 試驗(yàn)設(shè)計(jì) ─── [化] 實(shí)驗(yàn)設(shè)計(jì)

16、experimental computer network ─── [計(jì)] 實(shí)驗(yàn)性計(jì)算機(jī)網(wǎng)絡(luò)

17、experimental communication satellite ─── [計(jì)] 實(shí)驗(yàn)通信衛(wèi)星

18、deferred experimental and research expense ─── [經(jīng)] 遞延試驗(yàn)研究費(fèi)

19、experimental embryology ─── [醫(yī)] 實(shí)驗(yàn)胚胎學(xué)

experimental 詞性/詞形變化，experimental變形

副詞: experimentally |

experimental 常見例句（雙語使用場景）

1、Experimental data are introduced to support the discussion. ─── 為了便于討論，引用了一些實(shí)驗(yàn)數(shù)據(jù)。

2、Experimental investigation of aurum vapor laser[J]. ─── 引用該論文 金庭蓁,湯星里,韓紹琴.

3、In this paper, an experiment about shafting natural frequency measuring on torsional vibration experimental bench was studied and the factors, which cause error, were analyzed. ─── 在扭振試驗(yàn)臺(tái)上進(jìn)行了軸系扭振固有頻率測量的模擬試驗(yàn),并對試驗(yàn)中產(chǎn)生誤差的因素進(jìn)行了分析計(jì)算。

4、He assigned the experimental plot to that group. ─── 他把試驗(yàn)田劃給這個(gè)小組負(fù)責(zé)。

5、Secondly some explores on experiment and theory were studied, and the experimental results tallied with the theory well. ─── 其次做了一些實(shí)驗(yàn)和理論探索，并根據(jù)實(shí)驗(yàn)結(jié)果進(jìn)行了詳細(xì)的計(jì)算，實(shí)驗(yàn)結(jié)果與理論符合較好。

6、The result of comparison between the model-predicted data and experimental data shows that the model is of reliable precision. ─── 通過模型預(yù)測結(jié)果與實(shí)驗(yàn)結(jié)果的比較，表明模型具有一定的精度。

7、So, when putting into practice,the associated model often is used within the range of the experiment, but EOS model is used beyond the experimental data. ─── 因此，在實(shí)際運(yùn)用中，對于實(shí)驗(yàn)范圍內(nèi)的預(yù)測應(yīng)用締合模型，而超出實(shí)驗(yàn)范圍的預(yù)測則用EOS模型。

8、Experimental Study on NMP Refining VGO No. ─── NMP精制混合減五線餾分油小試研究。

9、Grouping and infecting of experimental rabbits. ─── 實(shí)驗(yàn)用兔的分組及感染;

10、On Dec.1, the courts began an experimental program allowing cameras in courtrooms with judges' approval, but Bell refused to go along in the trial of Robert Chambers for the murder of Jennifer Levin,18. ─── 12月1日各法院開始試驗(yàn)在法官認(rèn)可下，準(zhǔn)許在法庭內(nèi)使用攝影機(jī)?？墒窃阱X伯斯因謀殺18歲的萊文而受審時(shí)，貝爾拒不同意。

11、Experimental data: Penknife, spider, desk a piece. ─── 實(shí)驗(yàn)材料：小刀一把，蜘蛛一只，桌一張。

12、Ice Trojan experimental invasion and protection. ─── 冰河木馬入侵和防護(hù)實(shí)驗(yàn)。

13、being, however, immunotherapy is still in its experimental stages. ─── 然而，目前免疫療法還處于試驗(yàn)階段。

14、Added new experimental module pcntl (Process Control). ─── 增加了新的實(shí)驗(yàn)中的模塊pcntl

15、Experimental Approaches: What"s in the Pipeline? ─── 實(shí)驗(yàn)的處理途徑：是什么在導(dǎo)管中?

16、Their general practice is to set up experimental plots. ─── 他們的一般作法是建立試驗(yàn)田。

17、Through experimental study on displacement ventilation with up-fixing diffusers, the experiment data which include distribution of the supply air velocity, air temperture and 0. ─── 對風(fēng)口上置置換通風(fēng)系統(tǒng)進(jìn)行實(shí)驗(yàn)研究,得出此種通風(fēng)方式下送風(fēng)口的速度分布,室內(nèi)的溫度分布,0。

18、In 1954 the first experimental seed orchards were planted. ─── 到1954年，第一批實(shí)驗(yàn)性種子園建立起來了。

19、Experimental clinical examination and treatment. ─── 臨床試驗(yàn)性檢查和治療。

20、The senator is ready to argue for an experimental lifting of the ban. ─── 該參議員已準(zhǔn)備好爭取那條禁令的試驗(yàn)性解除。

21、The result obtain differ in different experimental method. ─── 不同的試驗(yàn)方法所得到的結(jié)果也不同。

22、A new clip-cage for whitefly experimental studies. ─── 一種適合粉虱實(shí)驗(yàn)觀察的新型微蟲籠

23、Coordinating units for chemical experimental analyses including China Steel Structure Company Metallurgy Division Chemical Experiment Unit and Kuo Hung Ltd. ─── 化學(xué)試驗(yàn)分析配合單位包括中國鋼鐵冶金技術(shù)處化學(xué)試驗(yàn)組、國宏股份有限公司。

24、Peking ducks were used as experimental animals in this experiment, and duodenum-pancreas fistulas were made by surgical operation. ─── 為得到純凈胰液,以北京鴨為實(shí)驗(yàn)動(dòng)物,用手術(shù)方法做腸-胰瘺管,手術(shù)完成40例。

25、The experimental results tell us that this vibration energy storing control system can convert and store some of the AC signal. ─── 實(shí)驗(yàn)結(jié)果初步表明，該振動(dòng)能量存儲(chǔ)控制系統(tǒng)能夠?qū)⒉糠纸涣鞯男盘?hào)轉(zhuǎn)換收集存儲(chǔ)。

26、A reliable biological conclusion obtained from microarray experiment must be based of the optimized experimental design and the scientific data analysis. ─── 基因芯片實(shí)驗(yàn)要得到可靠的生物學(xué)結(jié)論,必須基于優(yōu)化的實(shí)驗(yàn)設(shè)計(jì)和科學(xué)的數(shù)據(jù)分析。

27、Method and Theory in Experimental Psychology. ─── 實(shí)驗(yàn)心理學(xué)的方法和理論

28、Little Jim is doing very well in an experimental class. ─── 小吉姆在一個(gè)試點(diǎn)班學(xué)習(xí)得很好。

29、The indeterminateness is due not to faulty experimental technique. ─── 不確定并不是由于實(shí)驗(yàn)技術(shù)的不完備。

30、Are the experimental results replicated? ─── 實驗結果可以被複製嗎？

31、The experimental results bear out our supposition. ─── 實(shí)驗(yàn)結(jié)果證實(shí)了我們的假設(shè)。

32、The experimental plot was parceled out to the students. ─── 實(shí)驗(yàn)田已分給學(xué)生們耕種了。

33、The experiment shows that the numerical simulation results have good conformity to experimental ones at the stage prior to remelting of copper layer. ─── 實(shí)驗(yàn)表明,在銅層重熔之前,模擬結(jié)果和實(shí)驗(yàn)結(jié)論基本吻合。

34、At the Athletic Club he became experimental. ─── 他在運(yùn)動(dòng)俱樂部老是獨(dú)樹一幟。

35、She must be working on the experimental plot. ─── 她現(xiàn)在一定在試驗(yàn)田里工作。

36、Experimental cortical infarction and quantitative analysis in rats. ─── 大鼠實(shí)驗(yàn)性皮層腦梗塞及其定量研究。

37、Novax, UEF Experimental Satellite - Reducing crash damage to 3000. ─── UEF試驗(yàn)衛(wèi)星：墜落傷害減少到3000。

38、Get off the experimental plot! ─── 別在試驗(yàn)田里走!

39、He is now taking an experimental Chinese medicine. ─── 他現(xiàn)在正服用一種實(shí)驗(yàn)中的中藥。

40、They railed in a piece of ground for an experimental plot. ─── 他們用欄桿圍起一塊地來作試驗(yàn)田。

41、Experimental study of a certain effect. ─── 對其中某一作用的實(shí)驗(yàn)研究。

42、The experimental data were deal with SPSS software. ─── 實(shí)驗(yàn)數(shù)據(jù)用SPSS統(tǒng)計(jì)軟件處理。

43、And so Eagleman came up with an original experimental paradigm: SCAD jumping, which is often described as bungee jumping without the bungee. ─── 所以，毅革曼想出了一個(gè)原創(chuàng)的實(shí)驗(yàn)范式：SCAD跳，它通常被描述為沒有蹦極的蹦極跳。

44、Explaining Bubbles in Experimental Asset Markets Eric O'N. ─── 實(shí)驗(yàn)經(jīng)濟(jì)學(xué)與資本價(jià)格泡沫

45、The means of transport for experimental animals shall be safe and reliable. ─── 實(shí)驗(yàn)動(dòng)物的裝運(yùn)工具應(yīng)當(dāng)安全、可靠。

46、The experiment of MgO-Cr 2O 3 extrusion repair mass for RH immerging snorkel is introduced and influence of some experimental factors on the physical properties analyzed. ─── 介紹了鎂鉻質(zhì)擠壓修補(bǔ)料的試驗(yàn)室試驗(yàn)研究情況,分析了各試驗(yàn)因素對試樣物理性能的影響關(guān)系。

47、To document encryption experimental procedure. ─── 對文件加密的試驗(yàn)程序。

48、In the experiment, the scientists made use of two electrodes with atomic charge, and then the experimental observation of atomic reaction. ─── 在實(shí)驗(yàn)中，科學(xué)家們利用電極使得這兩種原子充滿電荷，然后觀察這些實(shí)驗(yàn)原子的反應(yīng)。

49、This article discussed how to decrease the cost of organic chemistry experiment from experimental content, experimental medicine and product of students' experiment. ─── 從實(shí)驗(yàn)內(nèi)容、實(shí)驗(yàn)藥品和學(xué)生實(shí)驗(yàn)產(chǎn)品三個(gè)方面探索如何降低有機(jī)化學(xué)實(shí)驗(yàn)的實(shí)驗(yàn)成本。

50、An experimental IRC community support agent. ─── 它是一種實(shí)驗(yàn)性的IRC社區(qū)支持代理。

51、The experimental curve runs nearly parallel to the abscissa. ─── 實(shí)驗(yàn)曲線幾乎與模座標(biāo)平行。

52、The eutectic amount and SDAS was measured in DC experiment and compared to model value, it was shown that the experimental data are in agreement with the model prediction. ─── 實(shí)驗(yàn)測定了不同成分鋁合金的共晶含量和枝晶間距, 實(shí)驗(yàn)數(shù)據(jù)與模型結(jié)果基本一致。

53、Nonsignificant influence of pressure on the experimental result was further confirmed by the experiment. ─── 實(shí)驗(yàn)進(jìn)一步驗(yàn)證了壓強(qiáng)對實(shí)驗(yàn)結(jié)果的非顯著性影響。

54、Using molecular sieve cakes as experimental materials,the simulative experiment of belt drier was carried out. ─── 以分子篩濾餅作被干燥物料,模擬帶式干燥機(jī)進(jìn)行了干燥試驗(yàn)研究。

55、Murat: Integration with PureMVC was initially created just as an experimental attempt to bring IoC in PureMVC applications. ─── Murat：與PureMVC的集成最初只是一種實(shí)驗(yàn)性的嘗試，用來將IoC帶到PureMVC應(yīng)用中。

56、In an opening microscopic biology experimental design project, our group has designed one kind of photobacteria toxicity experiment. ─── 在一個(gè)開放微觀生物實(shí)驗(yàn)設(shè)計(jì)項(xiàng)目中，我們組設(shè)計(jì)了一種發(fā)光細(xì)菌毒性實(shí)驗(yàn)。

57、He reached this conclusion on the basis of the experimental data. ─── 他是在實(shí)驗(yàn)數(shù)據(jù)基礎(chǔ)上得出這個(gè)結(jié)論的。

58、We both participated in the experimental work . ─── 我們倆都參加了這次實(shí)驗(yàn)工作。

59、In a typical experiment, the sample is weighed into the sample cell and placed in the furnace to equilibrate at the experimental starting temperature. ─── 在一個(gè)典型的實(shí)驗(yàn)中，樣品池中的樣品被稱量后，放在爐中以保持溫度平衡在實(shí)驗(yàn)開始時(shí)的溫度。

60、The equipment is still at the experimental stage. ─── 這種設(shè)備仍處于試驗(yàn)階段。

61、LeShan Moruo Experimental School No list items have been added yet. ─── 樂山沫若實(shí)驗(yàn)學(xué)校。

62、The experimental plot was 'parceled out to the students. ─── 實(shí)驗(yàn)田已分給學(xué)生耕種了。

63、They set aside 50 mu for an experimental farm. ─── 他們撥出50畝地作實(shí)驗(yàn)農(nóng)

64、Experimental vehicles have used solar fuel cells. ─── 實(shí)驗(yàn)車現(xiàn)在已用到太陽燃料電池。

65、The state farm assigned the experimental plot to that group. ─── 國營農(nóng)場把試驗(yàn)田劃給這個(gè)小組負(fù)責(zé)。

66、Have got experimental data consists of 600 pices of picture and video from 200 times of experiment . ─── 利用該實(shí)驗(yàn)裝置，進(jìn)行了“裂縫性氣藏的重力置換規(guī)律”和“溢流關(guān)井后井筒壓力動(dòng)態(tài)變化規(guī)律”二大類近200次實(shí)驗(yàn)，共獲得600余組實(shí)驗(yàn)數(shù)據(jù)（含數(shù)據(jù)、圖片、影像）。

67、Therefore,to spread the green organic chemistry experiment is the key of the chemistry experimental teaching reform and also one of the impo... ─── 因此,逐步推廣綠色有機(jī)化學(xué)實(shí)驗(yàn),是化學(xué)實(shí)驗(yàn)教學(xué)改革的重點(diǎn),也是解決環(huán)境污染的重要手段。

68、The experimental study of molecular rotation is called microwave spectroscopy. ─── 分子轉(zhuǎn)動(dòng)的實(shí)驗(yàn)研究被稱為微波波譜學(xué)。

69、Experimental results were analyzed by means of built-in field enhanced ion emission model and ion neutralized models,which coincides well with the experiment results. ─── 利用內(nèi)建場增強(qiáng)離子發(fā)射模型和可動(dòng)離子中性化模型對實(shí)驗(yàn)結(jié)果進(jìn)行了分析與計(jì)算,理論與實(shí)驗(yàn)吻合較好。

70、Of them did not join the experimental work. ─── 他們倆人都沒有參加實(shí)驗(yàn)工作。

71、We jointly took charge of the experimental furnace. ─── 我們共同負(fù)責(zé)試驗(yàn)爐。

72、ZFS is no longer in experimental status. ─── ZFS文件系統(tǒng)不再是試驗(yàn)性的支持。

73、It expatiate thinking about the hound of figuring virtual experimental model accurately, and bring the principle about definition of virtual experiment. ─── 基于靜電跳球虛擬實(shí)驗(yàn)的開發(fā)，闡述了關(guān)于精確表示虛擬實(shí)驗(yàn)?zāi)Ｐ拖薅鹊乃伎?，并提出確定虛擬實(shí)驗(yàn)精確度的原則。

74、They can only provide experimental evidence. ─── 他們只能提供實(shí)驗(yàn)證據(jù)。

75、Results for. Are found to be close to the experimental data. ─── 已經(jīng)證明。的結(jié)果與實(shí)驗(yàn)數(shù)據(jù)是相接近的。

76、Experimental study and clinical using of dried-pigskin? ─── 干燥豬皮的實(shí)驗(yàn)研究及臨床應(yīng)用?

77、How much is today's experimental atmospheric pressure? ─── 今天這個(gè)試驗(yàn)氣壓有多少?

78、Experiment 2 examined implicit processing of expressions by requiring subjects to attend to, and judge, facial gender, which was counterbalanced in both experimental conditions. ─── 實(shí)驗(yàn)2測試表情的內(nèi)隱運(yùn)作，通過要求受試者去注意、并判斷人臉性別，它們是同時(shí)在兩個(gè)實(shí)驗(yàn)情況中相互保持平衡的。

79、The latest experimental result of the EPR-type experiment supports the prophecy of quantum theory.However, it runs counter to Einstein"s deterministic physics of cause and effect. ─── EPR型實(shí)驗(yàn)的最新實(shí)驗(yàn)結(jié)果支持量子力學(xué)的預(yù)言,而和愛因斯坦的因果確定性的物理實(shí)在觀相悖。

80、In experimental plots the yield has been doubled. ─── 在試驗(yàn)田里，產(chǎn)量已(被)提高了一倍。

81、When I speak to the operators in Japan and Korea, they are still very much in an experimental mode to see how much users are willing to pay. ─── 當(dāng)我跟日本和韓國的運(yùn)營商交流時(shí)，他們說手機(jī)仍然片于試銷階段，以觀望有多少用戶愿意購買。

82、EXPERIMENTAL STUDY ON THE BACFECIOSTAFIC ACTIVITY OF GARLIC POWDER. ─── 大蒜粉抑菌活性實(shí)驗(yàn)研究。

83、Mix-planting experiment on annual legume with gramineous forage grass was conducted at Huangcheng Sheep Breeding Experimental Farm from 1998-1999. ─── 一年生豆科、禾本科牧草混播試驗(yàn)于1998-1999年在甘肅省皇城綿羊育種試驗(yàn)場進(jìn)行。

84、We tried to direct undergraduates to carry out the originative exploring experiment after giving instruction in experimental design. ─── 在開展設(shè)計(jì)性實(shí)驗(yàn)的基礎(chǔ)上,開放實(shí)驗(yàn)室,進(jìn)行了“首創(chuàng)”的探索性實(shí)驗(yàn)。

85、Laboratory Animal and experimental models. ─── 實(shí)驗(yàn)動(dòng)物及模型制作。

86、In this experiment, the relationship between clinical aspect and microcirculatory disorder during experimental coliform clinical mastitis was studied. ─── 臨床型乳房炎是損害奶業(yè)生產(chǎn)的重大疾病之一。

87、Experimental results demonstrate that the proposed method can resolve those problems resulting from the surface marking rule effectively. ─── 實(shí)驗(yàn)結(jié)果表明，塊標(biāo)記策略有效解決了面標(biāo)記策略過程中存在的問題。

88、In an experiment, 17 volunteers with no meditation experience in the experimental group spent three months meditating 10 to 12 hours a day . ─── 在實(shí)驗(yàn)方面，17個(gè)志愿者在實(shí)驗(yàn)的團(tuán)體方面有沒有沉思經(jīng)驗(yàn)度過三個(gè)月想天10到12小時(shí)。

89、The theoretical and experimental projects are key parts of learning about interplay between theory and experiment in developing knowledge about cell physiology. ─── 學(xué)習(xí)生理學(xué)過程中，理論和實(shí)驗(yàn)項(xiàng)目對于理解理論與實(shí)驗(yàn)之間的相互關(guān)系是非常重要的一個(gè)環(huán)節(jié)。

化學(xué)平衡常數(shù)有沒有單位？

這個(gè)問題，搜索一下可以得到現(xiàn)成的答案，很多前人已經(jīng)做過解釋了。r 中學(xué)學(xué)習(xí)的平衡常數(shù)K是experimental equilibrium constant，翻譯為“經(jīng)驗(yàn)平衡常數(shù)”或“實(shí)驗(yàn)平衡常數(shù)”。一般是濃度平衡常數(shù)，Kc，它是可能有單位的量，單位為mol^a / L^a。當(dāng)a＝0時(shí)，單位為1（即量綱為1）。r “你印象中的”平衡常數(shù)可能指的是standard equilibrium constant，在美國符號(hào)為K°，中國符號(hào)是在°內(nèi)加一個(gè)左右不出頭的橫線（看起來像θ）。標(biāo)準(zhǔn)平衡常數(shù)是后來的化學(xué)熱力學(xué)中定義的一個(gè)常數(shù)，其數(shù)值與標(biāo)準(zhǔn)態(tài)的選取有關(guān)，并且可以和熱力學(xué)狀態(tài)函數(shù)取得聯(lián)系，進(jìn)行很多理論計(jì)算，大學(xué)才會(huì)學(xué)到。r 中學(xué)學(xué)習(xí)的不是標(biāo)準(zhǔn)平衡常數(shù)的證據(jù)是：在學(xué)習(xí)水的離子積常數(shù)時(shí)，說到Kw=Kc·c(H2O)，把c(H2O)取的是55.6mol/L，而不是按照純液體標(biāo)準(zhǔn)態(tài)代入1。r

化學(xué)平衡常數(shù)有沒有單位？

平衡常數(shù)有沒有單位

相對原子質(zhì)量表中只有數(shù)值，那么相對原子質(zhì)量有沒有單位。這一點(diǎn)大家都知道，相對原子質(zhì)量是兩個(gè)質(zhì)量之比，同一個(gè)運(yùn)算式子中，兩個(gè)質(zhì)量應(yīng)為同一級(jí)單位，即都是千克或都是克，所以相對原子質(zhì)量的單位是1，并不是沒有單位。

平衡常數(shù)有一個(gè)大家族，包括化學(xué)反應(yīng)平衡常數(shù)、電離平衡常數(shù)、鹽類水解常數(shù)和溶度積常數(shù)等等。這些常數(shù)的表中也只有數(shù)值，這些常數(shù)也可以根據(jù)式子計(jì)算出來。如化學(xué)反應(yīng)平衡常數(shù)根據(jù)化學(xué)方程式計(jì)算出來，但是不同的化學(xué)方程式計(jì)算化學(xué)平衡常數(shù)的表達(dá)式不同，這個(gè)表達(dá)式不僅與反應(yīng)物和生成物的濃度有關(guān)，還與反應(yīng)物和生成物的物質(zhì)的量有關(guān)，而物質(zhì)的量是這個(gè)計(jì)算式子中濃度的方次，所以化學(xué)反應(yīng)平衡常數(shù)的單位很多都不相同。如合成氨的化學(xué)反應(yīng)平衡常數(shù)的單位是（升/摩爾）2或（L/mol）2，而一氧化碳和水蒸氣的化學(xué)反應(yīng)平衡常數(shù)的單位1。電離平衡常數(shù)、鹽類水解常數(shù)和溶度積常數(shù)也是如此。

平衡常數(shù)的后面沒有標(biāo)注單位，但是涉及的濃度是物質(zhì)的量濃度，而物質(zhì)的量濃度也只能用摩爾/升（mol/L），不符合這樣的單位（如毫摩爾/升）要換算成摩爾/升（mol/L）。這就告知我們使用平衡常數(shù)時(shí)注意物質(zhì)的量濃度的單位。