fore-and-aftiron mass纵向: direction; machine direction ...铁: iron材质: material quality量: measure capacity横向铁材质量: cross shipiron mass; thwartships iron mass下载手机词典可随时随地查词查翻译关注微信公众号:chachacidian,回复:纵向铁材质量,即可在微信中查询翻译