There were different interface transfer resistance and transmission time of electrons of different thin films.
不同薄膜的界面传输电阻和电子在薄膜内的传输时间明显不同；
USB has been a PC standard interface which can transfer data in high speed.
通用串行总线USB已成为PC的标准接口，它可以实现高速的数据传递。
USB has been a PC standard interface which can transfer data in high speed.
通用串行总线USB已成为PC的标准接口，它可以实现高速的数据传递。
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