abrupt change of cross sectionabrupt change of crosssection断面: section; fracture surface; p ...突变: sudden change; change sudden ...截面突变: abrupt change of cross-section截面突变处: abrupt change in section断面: section; fracture surface; plane of fracture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:断面突变，即可在微信中查询翻译
