angle， dihedral上: upper; up; upward反: reverse side角: role; part; character上反角: anhedral angle; dihedral of angle; lateral dihedral angle; positive dihedral; upward dihedral二面角: angle, dihedral; dihedral angle; interfacial angle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:二面角，上反角，即可在微信中查询翻译
