Diperchromic acid
[化] 过二铬酸
🧩 词语组成解析
🗣️ 情景例句
Relax with the family and then look for some work.
与家人轻松一段时间 ，然后找个工作。
Did you see him yourself?
你自己亲自看到他吗？
Many people in industry and the Services, who have practical experience of noise,regard any investigation of this question as a waste of time;
在工业部门工作和在军队中服役的许多人对噪音有切身的体会，他们认为对这个问题进行调查是浪费时间，