reinforced opening补强: reinforce孔: hole; opening; aperture加强孔: reinforced hole补强，尺寸: reinforced, size补强板: reinforcement pad; reinforcement plate; reinforcing plate; stiffener; stiffening plate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:补强孔，即可在微信中查询翻译
