When the visitors type in the data their eyes are fixed across the vertical axis at the left to the input field.

当用户输入数据的时候，他们的眼睛固定在纵轴输入框左侧的交叉点上。

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The input axis of the azimuth gyro under this condition is vertical, and pendulum unit is nulled.

在这样情况下方位陀螺的输入轴是处于垂直位置，同时摆锤单元在零位。

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