We put chemicals in test tubes in our chemistry class.

我们上化学课时把化学药品放进试管里。

Neurospora can be grown in test tubes containing a very simple culture medium .

链孢霉可以在有种很简单的培养的试管中生长。

CH400 transformer coulometer can be widely applied in test on production line of small manufacturer of transformer or rectifier power or in labs.

CH400变量测量仪系列可广泛用于各种小型变或整流源等厂家的生产流水线测试，实验室试品试验等场合。