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1·The modified eccentric circular centrode has been obtained by reducing the polar Angle of polar equation of eccentric circular centrode by integral multiple.

通过使偏心圆齿轮节曲线的极坐标方程的极角按整倍数缩小的方法获得了变形偏心圆齿轮节曲线的极坐标方程。

2·Radius and orbital velocities can be directly expressed as functions of time or polar angle, which is helpful for designing flight mission and motion trajectory.

这种方法可直接获得向径、轨道速度等参数随时间或极角（绕地心的转动角）的变化，便于分析轨道转移与逃逸运动，有助于飞行使命与运动轨迹的设计。

3·Remember that polar coordinates are about replacing x and y as coordinates for a point on a plane by instead r, r and theta,which is the angle measured counterclockwise from the positive x-axis.

极坐标是关于r，θ的,用r，θ代替平面上一点的x，y坐标，是从原点到那一点的距离，，which，is，the，distance，from，the，origin，to，a，point，θ是由x轴逆时针旋转,而得到的夹角。

4·It is the season for viewing Polar Mesospheric Clouds, and with our high beta-angle we were able to capture this thin layer of noctilucent clouds at sunset (6-25-2010).

到了观看极地中气层云的时候，在太空中使用高β角度，我们能捕捉到日落时刻这层薄薄的夜光云。

5·The angles refer to the polar view angle, i. e. the angle measured from the vertical.

角涉及到极面观的角，例如垂直物上测量的角。

6·The polar equation of non-circular gear pitch curve, calculation method of center distance, formula of pitch curve length, primary circle radius and pressure Angle is given.

给出了非圆齿轮的节曲线极坐标方程，两齿轮中心距的计算方法，节曲线长度、基础圆半径和压力角的计算公式。

7·A system of coordinates in which a point is located by its distance and direction (Angle) from a fixed point on a reference line (called the polar axis).

一种用点离基准线上(称极轴)固定点的距离和方向(角度)来表示点位置的坐标系统。

8·The transition curve is a familiar curve form. And lofting with polar coordinates method can break through localization of deflection Angle method.

缓和曲线是一种常见的曲线形式。使用极坐标法放样可以避免偏角法的局限性。

9·And lofting with polar coordinates method can break through localization of deflection Angle method.

使用极坐标法放样可以避免偏角法的局限性。

10·Through polar coordinate method error calculus demonstrated that the setting-out point error is mainly caused by Angle measurement error.

通过对极坐标法误差的计算论证了放样点误差主要是由测角误差引起。