Test method for the dead space of filtering particle respirator.
过滤式防微粒口罩死腔的试验方法.
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Activated dead bone, dead space, repair damaged bone tissue, so that the new bone regeneration.
激活死骨 、 死腔 、 修复受损的骨组织, 使新骨再生.
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The working drag in that reduces cost arrives each link of production, cannot take dead space.
降低成本的工作牵扯到生产的各个环节, 不能留死角.
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