A detached plug-in contact must never be soldered on .

绝不能将拆下的插入式触点再焊接上。

Should not be soldered directly to the battery .

导线不能直接焊在电池上。

The box had been sealed with wax and soldered shut .

盒子被蜡封住，盖子是被焊牢的。

Plumbing is mostly 15mm domestic fittings , silver soldered .

水暖主要是国内配件15毫米，银焊接。

In this photo , a worker heats a computer board on a steel surface to remove the computer chips soldered into it .

图中的这位工人在一块钢板表面加热一块电脑电路板以取下焊接在上面的芯片原件。