On the basis of primary factors influencing puncture of mediums, the capacity performance index of voltage resisting and puncture test is emphatically pointed out.
根据影响绝缘材料击穿的主要因素，着重阐述了交流耐压击穿装置的容量指标问题。
The major failure causes included puncture muff, severe vasovagal reactions, the absence of a distinct trigger zone and incomplete analgesia after the procaine test.
失败的主要原因包括卵圆孔穿刺失误，迷走神经反应，无扳机点和普鲁卡因测试不能达到完全不痛。
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