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坡面经纬仪
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坡面经纬仪
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陀螺经纬仪
释
slope theodolite
坡面经纬仪
在经纬仪横轴主望远镜上加装有能测定腰线的副望远镜的普通经纬仪。主要应用在矿山、水利测量中,用于给巷道标定腰线,可以迅速方便满足测量工作的精度要求。
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potassium niobate crystal
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Potato
potato
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potato crop
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potato harvester
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