英语词汇prime vertical怎么读，是什么意思，单词翻译、读音、固定搭配用法和短语词组及例句-英汉双解词典

单词	prime vertical
释义	prime vertical 简明释义主垂线：指与天球子午线垂直的圆，通过地平线的东西两点。网络释义 1 ?主垂线 ... 正垂线 horizontal-profile line 中垂线 midperpandicular; midperpendicular; perpendicular bisector 主垂线 prime vertical; principal line; principal vertical line ... 2 ?主垂圈 ... 垂向天线: vertical antenna 主垂圈: prime vertical 垂丝丁香: nodding lilac ... 短语 1 altitude on the prime vertical 东西圈高度 2 magnetic prime vertical 磁东西圈 ; 地物磁卯酉圈 ; 磁主垂面 3 true prime vertical 真东西圈双语例句 1 They are the curvature corrections for recording time at the determined zenith distances when a star passes the prime vertical and the meridian circle. 卯酉方向天顶距的星径曲率改正以及子午方向天顶距的星径曲率改正。 2 For open or semi-open layout of the pump, general pump and prime mover so that the axis and the vertical axis of pipe gallery. 对于露天或半露天布置的泵，一般使泵与原动机的轴线与管廊轴线垂直。
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