总之，根据两杆枪压力表读数的情况，可以判断出管束是否泄漏和堵塞。
In short, according to the two gun pressure gauge readings, you can determine whether the leakage and blockage of the tube.
两尺杆形成一个角重叠于被测角上，反映在刻度尺上的角度刻线读数就是被测角度。
The two ruler rods form an Angle which is overlapped on a measured Angle. The read number of the Angle reticle reflected onto the graduation ruler is a measured Angle.
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