英语释义

1. the axis of rotation of an equatorial mounting that is set parallel to the earth's axis permitting a telescope to be turned in hour angle or right ascension

2. the reference line in polar coordinates from which the angle coordinate is measured

片语

polar axis shaft极坐标轴

non-polar symmetry axis非极性对称轴

polar axis shaft detail极坐标轴

Polar r axis极轴

polar symmetry axis极性对称轴

telescope polar axis望远镜极轴

polar axis tracking system极轴跟蹤系统

polar coordinate axis极坐标轴

polar agreement axis极性对轴

英汉例句

• the alignment of the polar axis and the monitoring of the guiding process require absolute accuracy.

  极轴的摆放及追蹤过程必须十分準确。

• earth is shifting its polar axis and reversing its polar charges to operate more in alignment with the new level of energy vibration.

  地球正在进行极轴转移，正在进行磁极翻转，以与新的能量振动程度更好的校準。

• unfasten the r. a. clamp and turn the telescope around the polar axis to set the observing date on the date graduation ring to the observing time on the r. a. and hour graduation ring.

  松开赤经制动钮并使望远镜围绕极轴旋转用以设置日期刻度盘上的观测日期对準赤经兼小时刻度盘上的观测时点。

• 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。

• 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。