optical positioning system opsoptical positioning system, ops光学: optics; photology; photics定位系统: position system; fixer syste ...声学定位系统: acoustic positioning system光学定位: alignment, optical; optical alignment; positioning by optical sight定位系统: locating system; loran-c positioning system; position fixing system; position location system; positioning system下载手机词典可随时随地查词查翻译
