Arbitrary Angle of sight line rotation is measured and Angle measurement is stopped at any time to start shooting by using the device.

该装置可测出瞄准线转动的任意角度，能随时停止测角进行射击。

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The common features of the analyses for both conditions are: (1) the angle of rotation of stair plane is arbitrary;

另一种是两端铰支的。两种情况的共同特点是：（1）梯段平面转角为任意值；

youdao

The common features of the analyses for both conditions are: (1) the angle of rotation of stair plane is arbitrary;

另一种是两端铰支的。两种情况的共同特点是：（1）梯段平面转角为任意值；

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