仿真结果表明，比例微分控制在提高转向轻便性的同时能改善系统的稳定性，抑制大助力比例系数下转向盘的振动。
The simulation result shows that proportion differential control can improve the system stability and steering portability, and inhibit the vibration of steering wheel with big power ratio.
通过三年生产实际的考验，证明仪器性能稳定、使用方便、构造合理、轻便且易于推广。
Through three years'aperation, the device perfects its performance in its stability, portability and efficiency with sound structure for the evenness tests.
型井架主体结构为前开口形轻便井架，整体分为四段，有锥销连接，具有拆除方便、整体稳定性强的特点。
The major structure of K-type Mast is open-face mast, and the body is divided into four sections, which are connected by tapers and convenient to be dismantled with good stability.
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