The theory of text typology in this book sets up an important criterion for translation practice and translation criticism: text type determines translation strategy.

书中的文本类型学理论为翻译实践和翻译批评建立了一个重要的标准：依据文本类型来确定翻译策略。

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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。

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And this criterion cannot be affected by faults position, faults resistance, faults type and faults occurring time.

而且该保护判据不受故障位置、故障电阻、故障类型和故障时刻的影响。

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