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.
电火花加工中，放电介质对工件的材料去除率、表面质量以及电极相对损耗率有重要影响。
In the process of EDM, dielectric medium has remarkable influence on material removal rate, surface quality of the workpiece and relative electrode wear ratio.
电火花加工中，放电介质对工件的材料去除率、表面质量以及电极相对损耗率有重要影响。
In the process of EDM, dielectric medium has remarkable influence on material removal rate, surface quality of the workpiece and relative electrode wear ratio.
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