angle of fall角: role; part; character落角: fall(ing) angle; [军事] angle of fall◇落角间隙 [钟] drop塌落: cave in; caving; slumping; thrust崩落角: angle of break降落角: angle of descent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:塌落角，即可在微信中查询翻译
