介电击穿强度是指在强电场作用下，电介质丧失电绝缘能力的现象。分为固体电介质击穿，液体电介质击穿和气体电介质击穿3种。
ASTM D149固体电绝缘材料在工业电源频率下的介电击穿电压和介电强度的试验方法。
Standard Test Method for dielectric breakdown voltage and dielectric strength of D149 ASTM solid electrical insulating materials at industrial power frequencies.
ASTM D149固体电绝缘材料在工业电源频率下的介电击穿电压和介电强度的试验方法。
Test method for ASTM D149 solid electrical insulating materials at commercial power frequencies the dielectric breakdown voltage and dielectric strength.
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