concave and convex凹面: camber concave; concave surf ...和: mix; blend凸面: convex surface; crown凹面凸面透镜的: periscopic球面凹面镜，球面凸面镜: spherical concave and convex mirrors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:凹面和凸面，即可在微信中查询翻译
