An optical telescope with a micrometer is used to precisely adjust the polar axis of an equatorial radio telescope and any precise dial and clock will not be needed.
使用一具附有测微器的光学望远镜配合赤道式射电望远镜进行极轴精密调整，不需用精确的度盘和记时设备。
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How soon did I know you on earth, long or short? I feel a little bit trance, as it was 12 o 'clock of dial in the polar day, midday or midnight, it's hard to judge.