目的对比研究塑料瓶盖的液体瓶塞进行消毒与不消毒的效果。

Objective to contrast study on the effect of sterilization or no sterilization for the bottle stopper of the plastic lid.

youdao

目的对比研究塑料瓶盖的液体瓶塞进行消毒与不消毒的效果。

Objective to contrast study on the effect of sterilization or no sterilization for the bottle stopper of the plastic lid.

youdao