Bulk cargo transportation: it increases progressively with the annual speed of 20%, business take systematic amount 40%.
散杂货运输以每年20%速度递增，业务量占本系统总量40%。
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。
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。
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