约束条件是,所有摩尔分数之和等于1。,这就是摩尔分数的意义。

The constraint is that the sum of all the mole factions has to be equal to one That's what it is, to be a mole fraction.

youdao

虽然操守测验被证明有显著的预测和同时效度，但操守测验分数的意义和结构我们并没有很好地理解和掌握。

Although Integrity tests proved significant validity of the prediction and at the concurrent, but the meaning and structure of Integrity test scores we do not have a good understanding and mastering.

youdao

但对大学来说，这却毫无意义。大学里分数的“通货膨胀”仍然很普遍。

But they will have no effect on universities, where grade inflation is also rife.

youdao