双柱龙门刨床 [机] double column planing machine ; double housing planer

双柱龙门铣床 double-column planer-miller ; [机] double column planer milling machine

龙门架柱 gantry column ; gantry post

单柱龙门刨床 open side planer

双柱龙门刨磨床 double column plano-grinding machine

龙门式起重柱 twin derrick posts

双柱龙门刨铣床 double column plano-milling machine

龙门桅双柱桅 goal-post mast

龙门支柱 gantry support

双柱龙门刨床-- Double housing planer