screw down valve 旋压阀 ; 螺旋阀 ; 螺杆阀
screw-down valve 螺旋关闭阀
screw down gear 压下机构
screw-down stop valve 螺杆向下止动阀 ; 螺旋阀
screw-down rate 压下率
brass screw down bib cock 黄铜水龙头
screw-down crown 压下冠
electric screw down gear 电动压下装置
screw down cap 拧紧帽
应用推荐