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膨胀圈
dril.	slack loop
el.mach.	expansion strap
oil	expansion loop; expansion ring
steel.	compensator
膨胀圈〈管道〉
plast.	double turn
膨胀圈环
archit.	expansion loop

膨胀圈: 9 phrases in 6 subjects

Automobiles	1
Chemistry	1
Drilling	1
Oil / petroleum	2
Plastics	1
Technology	3