要改进该技术，不仅需要确定可靠性物理模型参数，而且要求掌握参数的统计分布特性。
To improve the technique, both the values of parameters in physical model of electromigration and the statistic distribution property of the parameters are needed.
甚至利用数学模型和计算工具，也将不会有“理想琴丝”，因为物理参数是钢琴固有的，巴丁说。
Even with math models and calculations, there will never be an "ideal string" because of the physical parameters inherent to the piano, Patin said.
该模型主要用来对某些物理对象各参数之间的关系进行识别。
It can be used to recognize the relationship among parameters existing in some physical phenomena.
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