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。
They are the curvature corrections for recording time at the determined zenith distances when a star passes the prime vertical and the meridian circle.
汽车轮胎的子午线是我国轮胎工业产品升级换代的方向。
Produced and use of radial tires to replace other tires is the development direction of the industry in our country.
纤维缠绕复合材料压力容器封头部分沿其子午线方向其厚度在不断变化，且任意点的缠绕角度也各不相同。
The thickness of the head part is changing along its warp direction and the winding Angle of any point on it varies.
应用推荐