deflanging去: go; leave凸缘: flange; bourrelet; lug; rim凸缘: flange; bourrelet; lug; rim 环状凸缘 collar flange; 接头凸缘 joint flange; 凸缘管 pipe flange带凸缘: flanged pin底凸缘: bottom flange下载手机词典可随时随地查词查翻译