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物理
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TDJ2光学经纬仪怎么读数?
人气:364 ℃ 时间:2020-04-14 10:19:19
解答
j2光学是比较精密的仪器,采用对径分化读书系统,是数字显示,上面有框住的数字即为分,下面的分化尺上有两个数,一个是分,一个是秒.当然下面的分要加在上面框到的数字上面
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