短語(yǔ)詞組短語(yǔ)articulated spool piece 鉸接聯(lián)接短管段removable spool piece 可拆短管new spool piece 新建膨脹彎leg spool piece 折線(xiàn)形法蘭聯(lián)接短管段spool piece installation 膨脹彎安裝SPOOL PIECE MARKING 管件標(biāo)記spool piece spool 管段flanged spool piece 雙法蘭短管blind flanged spool piece 盲法蘭短管 返回 spool piece