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usb暖手宝
USB协会标准
USB 2.0 Specification Engineering Change Notice (ECN) #1: Mini-B connector Date: 10/20/2000 Reason for ECN: The USB 2.0 specified device-side connector – the B connector – is too large for use with a new generation of handheld and mobile devices, e.g., cell phones which would benefit from connectivity to the PC. This ECN incorporates a specification of a device-side mini connector (hereafter r
储热式电热暖手器的标准浅析
储热式电热暖手器的标准浅析
本文通过对市场上常见的储热式电热暖手器的种类进行介绍,并结合其对应的安全检测标准中具体条款进行详细剖析以提高对该标准的理解。