本文介绍了常用气泡水平仪的基本构造和测量原理。并且介绍实验室条件下对水平仪的调校方法。
In the paper, the bubble level most in use is explained for its basic construction and measuring principle, and the adjusting method under conditions in laboratory.
分析了磁头飞行角度调校仪器不同工位测量磁头俯仰角和翻转角之间的相关性，并简单介绍了角度调校方法。
The paper analyzed the correlation of pitch angle and roll angle, which were measured by magnetic head flying angle adjustment apparatus, and introduced a method of angle adjusting.
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