eyepiece with cross-wires的意思|示意
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十字线目镜
eyepiece with cross-wires的网络常见释义
十字线目镜 ... 井字线目镜 crisscross eyepiec 十字线目镜 crisscross eyepiece; cross-hair eyepiece; eyepiece with cross-wires 双标线目镜 bifilar eye-piece ...