step valve

网络释义

1.	级阀 valve 阀门专业词汇A-Z ... stem-operated valve 推杆操纵的阀 step valve 层式阀; 级阀; 阶式阀 stop valve ball 停止阀球 ... www.douban.com
2.	阶式阀 valve 阀门专业词汇A-Z ... stem-operated valve 推杆操纵的阀 step valve 层式阀; 级阀; 阶式阀 stop valve ball 停止阀球 ... www.douban.com
3.	层式阀 valve 阀门专业词汇A-Z ... stem-operated valve 推杆操纵的阀 step valve 层式阀; 级阀; 阶式阀 stop valve ball 停止阀球 ... www.douban.com

4.	塔阀直角三角形_馆档网 ... "踏板"," step tread board" "塔阀"," step valve" "分段后推次序(熔接)"," step-back sequence" ... www.guandang.com

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