Above the table is an echo of brass pipes that cast light and deflect sound.
上面的表是一个回波的铜管，投光和转移的声音。
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。
The pipes could be fabricated by the brass H70 containing P, Sn, Si, Sb and Al.
采用含磷、锡、硅、锑和铝等元素的70黄铜制造散热管。
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