The USB transfer type is bulk mode which can provides high speed data transfer.
USB通信采用块传输方式，可以提供高传输速度。
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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