secondary element二次: secondary; quadratic部件: component; unit; parts; asse ...非结构元素 二次部材: non-structural element次部分: sub-section低次部位: position low-order; position overflow; position, low-order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:二次部件,即可在微信中查询翻译