知乎，让每一次点击都充满意义 —�?欢迎来到知乎，发现问题背后的世界。 The Earliest electrical application of SiC was to be a surge defense in lightning arresters in electric electric power techniques. These equipment have to show large resistance until the voltage across them reaches a specific threshold VT at which point their resistance need to fall to the decrease https://glasslinedsteelpipe60335.blogdeazar.com/36009686/aerogel-blanket-no-further-a-mystery