quick closing emergency valve
... 应急索具：jury rig 应急速闭阀：quick closing emergency valve 应急手动装置：emergency hand-drive ...
基于70个网页-相关网页
... quick-action valve spring 速动阀簧 quick-closing emergency valve 应急速闭阀 quick-closing stop valve 速闭截止阀 ...
基于24个网页-相关网页
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