英语语法分析

2 mg of copper as cupric oxide.

铜氧化物中铜质2毫克。

In this paper, the silver salt instead of cupric salt is proposed.

本文提出用银盐代替铜盐用间接原子吸收光谱测定。

But they shrink at different rates, which makes the black cupric oxide flake off.

但是，他们在不同的收缩率，从而使黑色铜氧化物片赶走。