短語詞組短語sliding sleeve valve 滑筒閥sliding discal valve 滑磐閥sliding spool valve type 滑閥式sliding gate valve 滑動水口sliding port valve 滑閥guillotine sliding gate valve 牐刀式滑動牐閥;滑動剪斷牐閥sliding sluice valve 滑動牐閥guillotine sliding gtoe valve 牐刀式滑動牐閥sliding throttle valve 滑動節(jié)流閥 返回 sliding valve