英语释义

• (astronomy) the angular distance of a celestial point measured westward along the celestial equator from the zenith crossing; the right ascension for an observer at a particular location and time of day

• the angular distance along the celestial equator from the observer's meridian to the hour circle of a given celestial body

片语

easterly hour angle东时角

mean sun hour angle平均太阳时角

hour angle difference子午角差

Greenwich hour angle格林尼治时角，格林时角

hour angle Greenwich格林威治小时角度

celestial local hour angle天体地方时角

sunset hour angle日落时角

s greenwich hour angle太阳格林时角

英汉例句

• in this paper, the mathematical formulas for estimating the hourly and daily radiation received on the plane of manual azimuth tracking and hour angle tracking are derived.

  推导出了方位角手动跟蹤和极轴时角手动跟蹤方阵面上曝辐量及辐照度的计算公式。

• it must be presented as a function of hour angle and declination of sun. by this reason, a receiver must continuously change its position with the move of sun at sky in a day.

  指出焦线位置是太阳赤纬和时角的函数，因此吸热器必须随着太阳的周日视运动而不断改变位置。

• how to complete the calculation of sun declination , sun right ascension, sun greenwich hour angle, greenwich hour angle of aries and sun local hour angle in astronomical position.

  利用计算机完成天文定位中的太阳赤经、赤纬、太阳格林时角、春分点格林时角、测者地方时角的计算。