俯仰轴—又称水平轴或横轴。由飞机的一侧通向另一侧。飞机绕此轴转动即造成机首的俯与仰。俯仰控制是由升降舵来达成的，水平安定面则为配平之用。
Pitch axis - Horizontal or lateral axis, passes through the airplane from one side to the other - nose up and nose down control is by elevators (and stabilizer for trim).
介绍了某大型液压设备中，一水平安置的增速组合液压缸速度控制回路的工作原理及所采取的包括差动连接在内的节能措施。
The paper introduces the working principle on which the speedcontrolling loop built in a speed up and built up hydrolic cylinder is used in a heavy type of hydrolic equipment surrounded by water.
为了改善这些成绩，改良自动旋转门的控制方式和平安检测系统，最终到达一个平安、波动的旋转门运转方式。
In order to solve these problems, the improvement of the automatic revolving door method of control and safety inspection system and eventually reached a safe and stable revolving door operation mode.
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