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braking release
 braking release
commun. railw. 制动缓解
| valve
 valve
hydroel.st. 活门; 电子管; 真空管
racing 气门
space 排气阀; 通气阀门;
sport, bask. 球嘴
tech.

to phrases
braking release
commun., railw. 制动缓解
braking release: 2 phrases in 1 subject
Rail transport2