?放气阀
... bulb and valve combination 释义:打气球-放气阀联合装置 deflating valve 释义:放气阀 air escape 释义:放气,漏气 ...
?放气嘴
... deflating vwisve 轴流式磁选机放气阀 deflating valve 放气阀 ; 放气嘴 Called Deflating 叫放气 ...
放气阀
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