对于电介质来说，它是介电常数和介质损耗角的正切的乘积，这是对出现在电介质中的热效应的量度。

Of a dielectric the product of dielectric constant and the tangent of its dielectric loss Angle; a measure of the heating effect which occurs in dielectrics.

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结果表明，随着电激励信号频率的增大，果品的电容、电阻以及损耗角正切值均减小；

The test results indicate that with the increase of frequency, the capacitance, resistance and losses tangent decrease.

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介绍了利用微带电路来确定一组高性能、高频印刷电路板材料的介电常数和损耗角正切的方法，且给出了一组印刷电路板材料的特性测量值。

The paper introduces measurements about dielectric constant and tangential loss angle of a group of good function and high frequency printed electronic circuit plate with microstrip circuit.

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