提出了极化散射矩阵总功率、极化熵、相似性参数的组合表达式。
In this paper, a combined expression is introduced from the span of a scattering matrix, polarimetric entropy and similarity parameters.
通过对产品间相似性参数的研究可以将阀门产品分为若干产品组，通过对新产品设计任务的参数值与各组产品参数值的对比，就可以迅速得到相似产品的信息。
By using the similarity metric, valves can be classified into groups. Contrasted parameters between products group and new product needs, information of similarity product will be found out.
具有主、副气缸运动学上最大相似性的结构参数，可使得主、副气缸的摩擦力和扭矩尽量一致及平稳性更好。
The structural parameters of kinematics has a supreme comparability between primary and secondary air cylinder, and the consistency and stability of torque and friction can be better.
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