water break water chemistry secti water chestnut watercirculation water closing water color water cooling water cooling tower water coulombmeter water demineralizing water dispersed pu water electrode water electrolyser water electrolysis water equivalent water extract water extract of chin water extractor wa...
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w w: a symbol for mass fraction; see Composition parameters. W: symbol for tungsten. Wacicenroder liquid: see Polythionic acids. Wacker process: see Acetic anhydride. Wagner-Meerwein rearrangement: a nucleo-philic 1,2-rearrangement in which R = H, alkyl or aryl groups, and the two C at...
Symbol. the 23rd in order or in a series. Biochemistry.tryptophan. Chemistry.tungsten. w 4 abbreviation for watt; watts. withdrawn; withdrew. withheld. w/ 5 abbreviation for with. w. 6 abbreviation for warden. warehouse. water. watt; watts. ...
This produceda revolution in writing. There was already a symbol for “house", which in the spokenSemitic language was beth. The symbol looked pretty much ike a simple house-floor,roof, and wall, with an opening on the lef. Instead of using this symbol to represent theidea of house",...
an abbreviation for "by weight," used in chemistry and pharmacology to describe the concentration of a substance in a mixture or solution. Properly speaking, 2% w/w means that the mass of the substance is 2% of the total mass of the solution or mixture. The metric symbol g/g...
B. English flag as a symbol of hope. C. England’s all-time favorite sport. 参考答案 1-5 BCCAB 6-10 ABACB 11-15 BCACA 16-20 CBAAC 听力原文 Text 1 W: Can I help you? M: Yes. I’d like to try this jacket on, please. W: Okay. The changing rooms are over there. Text ...
是质量百分比的意思，也可以说是重量百分比。w是weight的缩写，即质量的意思。也可以用m/m表示，m是mass的缩写。如“5%(W/W)的硫酸”，即表示硫酸的质量比上溶液的总质量为5%。需要注意的是，溶质的质量分数只表示溶质质量与溶液质量之比，并不代表具体的溶液质量和溶质质量。
Water. This comes in handy even in chemistry, particularly when space limitations occur (in a table, graph, or adscript, say). It costs nothing to use lower case, and avoid confusion with the symbol for tungsten (W). W Abbreviation and symbol for watt, a unit of power equal to one ...
an abbreviation for "by weight," used in chemistry and pharmacology to describe the concentration of a substance in a mixture or solution. Properly speaking, 2% w/w means that the mass of the substance is 2% of the total mass of the solution or mixture. The metric symbol g/g...