INSIDE SCREW WEDGE GATE VALVES的意思|示意
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内螺纹楔形闸阀
INSIDE SCREW WEDGE GATE VALVES的网络常见释义
暗杆楔式闸阀 ... inside screw lift check valve 内螺纹升降式止回阀 INSIDE SCREW WEDGE GATE VALVES 暗杆楔式闸阀 ISRS Inside screw&Rising stem 内螺纹升杆 ...