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。
From Cambrian to the end of Middle Triassic, the Siberia-eastern China-Australia axis rotated from an eat-westward equatorial arrangement to south-northward longitudinal arrangement.
从寒武纪到中三叠世末，西伯利亚-中国东部-澳大利亚这个“轴心”由东西向沿赤道排列状态顺时针旋转成为南北向沿子午线排列状态。
Because of its oblate shape, the moment of inertia of the earth is a maximum about the polar axis and minimum about an axis in the equatorial plane.
由于地球是扁球体，绕极轴惯量矩最大，而绕在赤道面内的轴的惯量矩最。
A photographic equatorial mount capable of reasonable accurate tracking of the RA-axis.
一个可以有相当赤经追踪精确度的摄星用赤道仪。
A photographic equatorial mount capable of reasonable accurate tracking of the RA-axis.
一个可以有相当赤经追踪精确度的摄星用赤道仪。
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