Having leaded the semi-parameter model into the geodetic inversion model, the effect of surveying data systemic error is eliminated or weakened on the geodesy inversion model.
把半参数模型引入大地测量反演模型，有利于消除或削弱了测量数据系统误差对大地测量反演的模型参数的影响；
But if the depth and extension of the fault increase, the inversion results will have a bigger error because the 2d model is not fit for the real fault.
但当断层的深度加大或断层延伸范围变小时，实际的模型与二度体模型的假设差别较大，致使反演结果误差较大，难以适应实际问题的需要。
There only exists delay inversion model in pure-delay discrete system which causes delay error when adaptive inverse control is used for canceling noise.
由于纯延迟离散系统仅存在延时的逆模型，因而对该系统进行自适应逆控制时，扰动消除会产生一定的延迟误差。
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