USB device driver is a reliable guarantee for USB devicefunction.
USB驱动程序是实现USB设备功能的可靠保证。
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To improve the rice vertical disk seed sowing devicefunction, find out affect sow key factor. According to the country GB-6973-86to measures the sowing seed function.
To analyse the configuration process between OS protocol driver and USB bus device and the matching process between driver and the correspond devicefunction interface.