管路体系焊补后应当用紧缩空气吹净。
The piping system should be blown with the compressed air after being welded.
因为愈来愈多的空气堆积正在气箱内，空气分子遭到紧缩，。
As more and more air crowds into the chamber, the molecules of air become compressed.
因为愈来愈多的空气堆积正在气箱内，空气分子遭到紧缩，。
As more and more air crowds into the chamber, the molecules of air become compressed.
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