... soldering bushing 焊接轴衬 soldered fitting 钖焊零件 solder 钖焊料 ，低温焊料 ...
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... soldering bushing 焊接轴衬 soldered fitting 焊零件 solder 焊料 ，低温焊料 ...
基于20个网页-相关网页
soldered-joint fitting 软焊接头
soldered tube fitting 锡焊管管件
·2,447,543篇论文数据，部分数据来源于NoteExpress
Older homes may have lead pipes, but even new plumbing that's lead free can still contain lead in brass fitting or faucets or in copper pipes with soldered joints.
旧的家庭用的是铅管，但是即使是新的无铅水管装置在焊接接头的铜管件或水龙头或铜管中也含有铅。
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