... 平行闸板阀 parallel slide valve 对夹闸板阀 Wafer plate valves 闸阀,闸板阀 gate valve ...
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rising-stem double-disk parallel slide valve 明杆平行式双闸滑阀
disk parallel slide valve 明杆平行式双闸滑阀
pneumatic parallel slide valve 气动浆液刀闸阀
steam parallel slide stop valve 蒸汽闸阀
parallel slide gate valve 平行滑动闸阀
Parallel gate valveparallel slide valve 平行式闸阀
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