prefocus lens预: in advance; beforehand聚焦透镜: condenser lens; focusing len ...聚焦透镜: condenser lens; focusing glass; focusing lens; focusing mount lens强聚焦透镜: strong focusing lens主聚焦透镜: main focusing lens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:预聚焦透镜，即可在微信中查询翻译
