电连接根据安装位置分为哪几种？
["1\u6a2a\u5411\u7535\u8fde\u63a5\uff0c2\u80a1\u9053\u7535\u8fde\u63a5\uff0c3\u9053\u5c94\u7535\u8fde\u63a5\uff0c4\u951a\u6bb5\u5173\u8282\u7535\u8fde\u63a5\uff0c5\u9694\u79bb\u5f00\u5173\u7535\u8fde\u63a5\uff0c6\u907f\u96f7\u5668\u7535\u8fde\u63a5"]