The results show that the diffuser has such advantages as larger induction ratio, low resistance and noise, relatively even air supply, no condensation, simple in structure and low in costs.

测试结果表明，该风口的诱导比大，阻力小，噪声低，送风比较均匀，风口没有结露现象，结构简单，造价低。

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In process of continuous induction heat treatment, there are heavy electromagnetic disturbance, nonlinearity. heavy noise and variable parameters. The existed methods of control are difficult.

连续感应热处理过程存在着强电磁场干扰、非线性、强噪声和过程参数多变性，传统的控制方法难以奏效。

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In this paper, we research the induction electromotive force, signal -to-noise ratio of the two-coil sensor, all of these can lay the foundation for designing apparatus.

研究计算了双线圈传感器的感应电动势、信噪比和趋肤深度，为今后仪器的设计提供了理论依据。

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