The design characteristics are that center of the disk is not on optical axis, deviation of target is linear and continuous and azimuth information of target is given in orthogonal coordinate system.

该调制盘的设计具有调制盘的转动中心与光学系统的光轴不同心，连续线性反映目标的偏离量，以及以直角坐标方式给出目标的方位信息等特点。

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But the biggest problem was the Angle that they were set at, a small deviation in the azimuth and direction created a variety of incorrect readings.

但是最大的问题是他们设置的角度，一些小的角度及方向的误差可以导致很多不正确的读数。

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Calculation of practical data from oil fields demonstrates that formation sloughing pressure is dependent on deviation Angle and well azimuth.

对油田的实际资料进行计算表明，井壁坍塌压力与井斜度和井斜方位角有关。

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