The state of being compressed.
被压缩的状态。
So, one possibility would be that your fluid is actually being compressed or expanded.
一种可能性就是，流体被压缩或是膨胀了。
The piping system should be blown with the compressed air after being welded.
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.
管路体系焊补后应当用紧缩空气吹净。
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