设计一个合适的保护开关的最难点是适合印制板上的所有布线，并保证适当的电压空间。
The hardest part of designing a properly guarded switch is to fit all the traces on the board and maintain proper voltage spacing.
保护通常是通过屏蔽继电器实现的，并且布线在印制板上。
The guard is usually implemented with shielded relays and traces on a printed circuit board.
其中包括对印制板的布线、电容性耦合、数字电路的噪声容限和传输线的探讨。
It includes wiring of printed circuit board, electric capacity coupling, tolerance of digital circuit noise, and transmission line.
从零件放置、布线和补铜箔等三个方面讨论了在双面印制板设计中如何控制电磁干扰。
The paper discusses how to control the EMI in designing twolayer PCB at three points:part placement, routing and copper pour.
最后提出了用户电路板中印制板电源、地线布线设计时应注意的问题。
Finally, it indicates the problems to which one should pay more attention when designing power and ground wire in Subscriber Circuit Board.
表面贴装印制板设计直接影响焊接质量，将专门针对表面贴装印制板的焊盘设计、布线设计、定位设计、过孔处理等实用技术作一些探讨。
Design of surface mount PCB makes an impact on soldering quality. The design of soldering pad, track layout, location and through hole treatment are discussed.
表面贴装印制板设计直接影响焊接质量，将专门针对表面贴装印制板的焊盘设计、布线设计、定位设计、过孔处理等实用技术作一些探讨。
Design of surface mount PCB makes an impact on soldering quality. The design of soldering pad, track layout, location and through hole treatment are discussed.
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