减少或松开 to reduce or loosen
松开或释放某事物 let sth go
胸痛或胸骨松动或裂开 sternal instability
松开或释放某人 let someone go
拉动或松开拉线，卷筒可正、反向转动，带动纱帘卷起或落下。
When the pull line is pulled or loosened, the reel can rotate positively and reversely, which drives the screen curtain to roll up or fall down.
由于两种金属的膨胀率不同，当温度变化时，恒温制弹簧将卷绕或松开。
Because of differences in the expansion rates of the two metals, the thermostatic spring winds up or unwinds with changing temperature.
锅盖部 分和锅身部分设有锁定或松开内盖（9）和内锅（6）的锁定机构和开合盖安全 保险装置；
The lid and the pan body are provided with a locking mechanism to lock or open the inner lid (9) and the inner pan (6) and a device assuring the safety of opening and closing the lid.
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