在针对软件的模块化方面，着重分析了USB外设端的固件、主机操作系统上的客户驱动程序以及操作界面程序三个部分程序编写方法。
In the aspects of software modularization, emphasize to analyze USB device firmware, driver program of computer operating system and interface program-three parts of programming method.
是第二次机械化加工，在顶端加工后，再将紧固件坯料钉端切削。
Pointing . Pointing is a secondary machining operation consisting of adding points on fastener blanks which were not pointed during the heading operation .
紧固件(26)设在构造的插头的近端(16)，以便与护罩(60)配合(62)。
A fastener (26) is provided at the proximate end (16) of the plug constructed so as to mate (62) with the cover shield (60).
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