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3 个月
双绞线的线对为什么要设计成12 36 45 78,而不是更自然的12 34 56 78?
首先,总的结论是这是个兼容性设计。这里说的兼容,是指RJ45插座要向下兼容4脚的RJ11。 那就要先说说RJ11了。其实很多人甚至没见过4触点的RJ11 ...
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"%24%20is%20not%20defined","Stack":"ReferenceError%3A%20%24%20is%20not%20defined%0A%20%20%20%20at%20self%3A44%3A3529%0A%20%20%20%20at%20self%3A44%3A3535","Meta":"self","Line":"44","Char":"3529"