化学计量数：化学反应方程式中,参与反应的物质前的系数,称化学计量数，用η表示。实际上在运用中就是方程式的配平，如果把方程式用待定系数法配平以后，得到的数字就是它的系数，也就是计量数。
... 化学计量点;stoichiometric point 化学计量数;stoichiometric number 化学计量学;chemometrics ...
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重要的是保持化学计量数正确，以保证每种物质的速率，能够被正确表示。
But the important thing is to keep track of stoichiometry so that the rate as it pertains to each constituent is accounted for correctly.
化学计量数都是1。，反应物和生成物的分子数都一样，这使问题简单了点。
All the stoichiometric coefficients equal to one, we've got the same number of molecules as reactants and products, that'll make things a little bit easier.
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