如果调整参数过多的话，这种试凑的方法很难执行。
If the adjustment parameter is overfull, this testing method is difficult of carry out.
由于等效模型可调参数过多，难以对所有参数进行调整。
Parameters in the equivalent model were too many to adjust directly. And the additional fictitious impedances were introduced to overcome this difficulty.
盘式制动器的零部件比较多，但由于部分零件为异形不规则结构，并且需要定义的尺寸参数过多，不便于进行参数化设计。
The brake system has many parts, but some of them are irregular structure, and need to define too many size parameters, are not easy to make parametric design.
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