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The outer surface is plated with oxygen-free copper, and the raw materials of the core wire are brass, bronze and miscellaneous copper. Because the raw materials of copper inside and outside are different, it is called copper clad copper. The quotation is moderate, and the quotation for miscellaneous copper is usually only half or lower than that for oxygen-free copper. The produced wire is attributed to non-standard wire, and its anti-twisting and anti-oxidation functions are better than those of copper-clad aluminum. Suitable for induction and wiring engineering with low accounting, it can lay hidden lines in the wall. However, due to the influence of raw materials, the resistance is relatively large, with a 100-meter resistance of 25-35 ohms or even more, and the signal attenuation is very large. It is not so-called all-copper. We pay attention to the distinction.Note: If there is a black screen of the mobile phone, iTunes does not recognize it, and there is no response after the startup key/power key is pressed. This is a fake DFU mode. You need to press and hold the startup key/power key + HOME key for 15 seconds to forcibly shut down the iPhone, and then start to operate into DFU from the second step.The technical scheme further optimized by the utility model is that the filler assembly 9 comprises a graphite packing filler layer. The packing assembly 9 is secured by an O-ring 10 and a packing gland 11.所以这次苏角和番邑军算是功不可没。在阳朔酒吧街西街，终日游手好闲、不务正业的青年胡大伟疯狂地爱上了经常带旅游团来广西阳朔旅游的美女导游——青春靓丽的婷婷。为了追求婷婷，大伟在西街开了一间酒吧，决心开创自己的事业。尽管酒吧越开越红火，但是大伟对婷婷的追求仍旧不得其门而入，婷婷反而和台湾来的游客朴恩哲产生了感情，这令大伟非常苦恼。此时，恩哲的未婚妻金至美从台湾追婚而来。对大伟而言，这本来是大好的时机，但他发现婷婷与恩哲之间真爱难舍。为了让婷婷幸福，大伟忍痛割爱，而婷婷却终于发现自己所真正爱的人是默默在一旁帮助她的大伟……