According to this background, this paper researches on the designing and realizing methods of the auto-focusing system.
针对这一背景，研究了自动聚焦系统的设计与实现方法。
Designing and realizing methods of network communication of on_line monitoring data for main_fan in coal mine realized by MFC is introduced and the purpose of on_line network monitoring is achieved.
介绍了利用MFC实现煤矿主通风机性能在线监测数据的网络通讯的设计思想及其实现方法，从而达到在线网络监测的目的。
This paper introduced designing principles and realizing methods of tracking and telemetry receiver of CDAS of FY2 satellite.
介绍了FY - 2号CDAS中频跟踪遥测接收机的设计原理及实现方法。
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