The lead poses little threat if undisturbed but "replacing old windows or drilling into walls to blow in insulation, for example, can contaminate the house with lead dust," CELA said.
在没有施加外力影响的情况下，铅的危害并不大。 但是CELA解释说：“比如，在更新旧的窗户或者钻进墙壁中嵌入绝缘材料的时候，可能使房间受到铅尘的污染。”
The invention provides a drilling tool having a miniaturized dust collection device, which improves the working efficiency while improving the dust collecting efficiency.
本发明提供一种具有小型化的集尘装置的钻孔工具，其在提高 集尘效率的同时提高作业效率。
The lead poses little threat if undisturbed but "replacing old windows or drilling into walls to blow in insulation, for example, can contaminate the house with lead dust, " CELA said.
在没有施加外力影响的情况下，铅的危害并不大。但是CELA解释说：“比如，在更新旧的窗户或者钻进墙壁中嵌入绝缘材料的时候，可能使房间受到铅尘的污染。”
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