1·Boil the water in one of the cans and ensure the steam is directed into the copper tubing with the other end in the empty can.
在一个容器里把水煮沸,得保证水蒸汽被引进了铜管的一端,而另一端则放在空的那个容器里。
2·Air distribution piping systems almost invariably use soft copper tubing with soldered fittings.
压缩空气的分配管道系统无例外地都是用焊接管件的铜管。