... long line 长绳 long stem valve 长杆阀 long term reliability 经久靠得住 ...
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短语
加长杆阀门
Extend spindle valve
伸缩式装料长杆阀
retractable filling lance valve
伸长滑阀杆
extended slide valve rod
加长阀杆
extended stem
可伸长斗杆的控制阀
extendable stick control valve
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