Chemical terms, an important tool of learning chemistry should be acquired under the conduct of teachers by the way of dispersing memorization and chemical phenomena-associated memorization.
教师在教学的过程中，应强调学习化学用语的重要性，并引导学生通过分散识记、结合化学事实来掌握化学用语的方法。
By processing the original power signal with dispersing autoregressive model AR, the difference between the measured value and the forecasting value of the model is used to judge the tool breakage.
功率原始信号经离散自回归AR模型处理，利用信号的实测值与模型预测值之间的预测偏差来判断刀具的破损。
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