We put chemicals in test tubes in our chemistry class.

我们上化学课时把化学药品放进。

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

链孢霉以在含有一种很简单的培养的中生长。

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

CH400变压器电量测量仪系列用于各种小型变压器或整流器电源等厂家的生产流水线测，实验室品验等场合。