退纬重新打纬 back pulling: 回采煤柱pulling back: 回采煤柱center back seam pulling: 后中起吊pulling: 拉单晶的; 拉伸; 拉物体; 普林; 牵引的; 提升pulling in: 牵入下载手机词典可随时随地查词查翻译
