The computing method of differential throttling and the analytical process of thrust vector of inner nozzle and plug were introduced. The generated moments of pitch were given.
介绍了差分流量调节的计算方法和内喷管与塞锥推力矢量变化的分析过程，计算产生的俯仰力矩。
The paper takes the differential pressure test method as the research the key point, has completed the throttling gear design under the well.
文章把压差测试法作为研究的重点，完成了井下节流装置的设计。
A new method about the standard throttling set on-line iterative measurement is proposed, that is based on flow measurement using the traditional standard throttling set.
在研究传统的标准节流装置测量流量方法的基础上，提出标准节流装置在线迭代测量新方法。
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