使用方法： （1）将示波器探头插入通道1插孔，并将探头上的衰减置于\"1\"档；
I created a web-site for a client with W3C Valid XHTML and CSS Code, 开发者_StackOverflow中文版Semantic and Accessible Mark-up and I had said to client my code will be SEO friendly. Theyway i code it
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