等量的英文：
half-and-half
isometric(al)

参考例句：

The midpoint and equivalence point for carbonic acid are much higher
碳酸滴定中点和等量点也高得多。

Other plankton species in near equal numbers replaced calcareous microplankton as they died out
钙质微体浮游生物消亡时，已经有近乎等量的其它浮游生物种类代替它们了。

half是什么意思：
n. 一半；半场，半局
adj. 一半的，不完全的
adv. 一半地，部分地

That is a job and a half.
那是非常困难的工作。

half-believe ";"half believing, half doubting
将信将疑

His reply was taken half seriously half in jest.
他的答覆看来是半开玩笑半认真的。

a half - and - half mixture of linseed oil and turpentine.
亚麻籽油和松节油两种成分各占一半的混合物

isometric是什么意思：
adj. 等角的；等轴的
n. 等容线

Isometric exercises are anaerobic.
肌肉等长收缩锻炼是不需氧的。

Isometric drawing was much simpler than perspective drawing.
等角图较透视图简单得多。