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              南京日華光學經緯儀

              南京日華光學經緯儀

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                產品介紹:望遠鏡為內調焦式,正像、成像清晰。帶尺讀數方便,估讀精度高。豎軸系為半運動式,轉動靈活,方向精度高。儀器一測回水平方向標準偏差不大于±6",一測回垂直角標準偏差不大于±10&quo...
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              ?? 1 ??
              我和妽妽的第一次
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