求翻译：新桶罐装之前应进行检查，不能有杂质、水分。是什么意思？

New barrel should be checked prior to canning, can not have impurities, water.

New tins and cans should be checked before installation, and should not be impurities, and moisture.

The use re-steams the vehicle hour, verifies the vehicle number match case, when and judges the vehicle bottom oil residue and the product variety and the trademark same also Che Dewu the obvious moisture content, the impurity, but does not clean directly canned, re-steams the vehicle to be most onl

Should be checked before new drum cans cannot have impurities, moisture.

Should be checked before new drum cans cannot have impurities, moisture.