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用机械方式,把需要防渗的部位遮盖起来,使其与渗剂气氛隔绝,达到防渗目的的方法,我们把它叫做“机械遮盖防渗”.
Mechanically, the need to cover part of the impermeable to permeable agent atmosphere, to achieve the purpose of impermeable measures, we call it “mechanical cover impermeable.”