Test technique for short - breakdown test in cbm well and its application 煤层气井微破裂试验测试技术及应用
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And then the features of the tunnel deformation failure in various rocks are discussed by the breakdown test on single - arch model 进而对单拱模型进行了破坏试验，探讨了不同围岩隧道的变形破坏特点。
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The lightning impulse breakdown and steep - front impulse breakdown test of silicone rubber are also performed , which give a reference for other so lid materials . the result of this research also will give a reference to revises the standard of steep - front wave impulse voltage test 为了配合本课题的研究还做了硅橡胶材料的雷电冲击耐受强度和陡波冲击耐受强度试验，这两个试验对了解其它固体材料的雷电冲击系数和伏秒特性也具有参考价值。
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