optical appraratus and instruments光学器械: optical instrument和: mix; blend仪器: instrument; appliance; appar ...测量器械和仪器: surveying apparatus and instruments航海器械和仪器: nautical apparatus and instruments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:光学器械和仪器，即可在微信中查询翻译
