Based on building up a model of echo canceller, the convergence of gradient-type stochastic adjustment algorithm of an adaptive filter under the mean-squared error criterion is discussed.
在建立回波抵消器模型的基础上，按最小均方误差准则，导出了自适应滤波器抽头的统计梯度算法和抽头调节的收敛公式。
Sometimes, all that is necessary (in earlier drum-type Brakes) is a minor Brake adjustment to compensate for lining wear.
有时，所要做的仅仅是对制动器稍做调整，以减少衬片磨损。
For hundreds of years, however, the vegetation in any given region may have a different appearance that it will ultimately, due to this type of adjustment.
几百年过后，特定区域的植物最终将因调整方式的不同而呈现出各别的形貌。
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