by weight

基本解释

It is reconstituted by mixing one part egg mix with two parts of water (by weight).
这是重组的一个部分混合鸡蛋和混在一起的两个部分水（按重量计算）。
I have a trophy in my office proclaiming me to be “The Writer with No Future” because I could produce more rejection slips by weight than any other writer at an entire conference.
在我的办公室里有一面奖牌，它宣称我是“没有未来的作家”，因为在参加那次会议的全部作家中，从重量上来比较，我收到的退稿信是最多的。
DESPITE making up about half, by weight, of the living things on Earth, bacteria get short shrift in the biodiversity stakes compared with whales, elephants and rain-forest trees.
尽管以重量计算，细菌占了地球上生物总量的二分之一，但与鲸鱼，大象，雨林树木相比，在对生物多样性的功劳上，细菌仍然受到冷落。

Different explanations are offered for America's weight problem a problem increasingly shared by other countries.
So, it's a trivial matter, by looking at what is the weight and how far does it drop, to say OK, how much work is done by the paddle wheel.
好，让我们看看重物的质量,以及它下落的距离，就知道桨轮做了多少功。
麻省理工公开课 - 热力学与动力学课程节选
Now it's not uncommon, by the way, for laboratory animals in these studies to triple their body weight.
顺便说下,在实验室,让动物体重变成普通的三倍,并不罕见
耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

Reduce dosing errors in pediatrics, where dosing is calculated by weight and age.
FORBES: Health, Technology and the Forgotten Stepchild of Innovation