短語詞組短語Constant Flow Blanking Plug 恒流堵塞器adjustable blanking plug 可調(diào)堵塞器blanking -off plug 澆口塞water distribution blanking plug 配水堵塞器circular head blanking plug 圓頭堵塞Blanking plug with lockring 帶鎖緊環(huán)的截止琯塞blanking cap & plug 井口帽inspection hole blanking plug 檢騐孔堵塞 返回 blanking plug