短语词组短語prism erecting 稜鏡轉像Porro Prism Erecting System 波羅正像系統;波羅鏡正像系統Abbe prism erecting system 阿貝稜鏡正象系統prism -erecting telescope 稜鏡轉像望遠鏡 返回 erecting prism