deflation sleeve
... deflation hollow 风蚀洼地 deflation sleeve 放气套管 deflation receptor 消气感受器 ...
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全套管道孔板、阀门、法兰及反法兰、紧固件及其它所有附件，所有放水、放气阀门及安全阀。
Full set of pipe orifice, valves, flanges and counter flanges, fasteners and all other attachments, all water release valves, gas release valves and safety valves.
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