短語詞組短語sliding sleeve valve 滑筒閥sliding discal valve 滑盤閥sliding spool valve type 滑閥式sliding gate valve 滑動水口sliding port valve 滑閥guillotine sliding gate valve 閘刀式滑動閘閥;滑動剪斷閘閥sliding sluice valve 滑動閘閥guillotine sliding gtoe valve 閘刀式滑動閘閥sliding throttle valve 滑動節(jié)流閥 返回 sliding valve