Maintenance department: maintenance industries circuit boards, machine equipment system, main board, controller, power supply, frequency converter, PLC and touch screen.
维修部：维修各行业电路板，机加工设备系统，主板，控制器，电源，变频器，PLC触摸屏等。
The portable blade frequency measurement instrument based on DSP is designed next. The DSP-based circuit board is made and the software program for testing hardware circuit board is coded.
论文完成基于DSP芯片的便携式叶片频率测试仪的硬件电路设计和电路板的制作，并完成对电路板的测试。
The characteristic of thermosetting polyphenylene oxide resin copper clad laminates as wel as their application in the high frequency printed circuit board is introduced.
论述了热固性聚苯醚树脂基覆铜板的特性及其在高频印刷电路板上的应用。
By taking the rectangular metal patch on a printed circuit board as the radiation element and by cutting a C-shaped slot in the rectangular patch, a frequency band notch is implemented.
该天线采用印刷电路板上的矩形贴片作为辐射单元，通过在矩形贴片上开一个C形槽来实现陷波功能。
For the design of low frequency circuit, the mutual link relations can be regard as lumped parameters, and the influence of line's mutual link and board layer's property can be neglected.
对于低频电路设计，互连关系视为集总参数，线迹互连和板层特性的影响可以不考虑。
Cyanate compound, the preparation of triazine copper clad panel and 1ts application in high frequency printed circuit board were introduced in this paper.
本文介绍了氰酸酯化合物，三嗪覆铜板的制备及其在高频线路板上的应用。
This paper established the high-frequency models of resistors, capacitors, inductors, diodes and transistors, and extracted the high frequency distribution parameters of printed circuit board.
然后建立了电阻、电容、电感、二极管、三极管、变压器和印刷线路板的高频模型，并提取模型参数。
The printed circuit board comprises a radio frequency transceiving module.
所述印刷电 路板具有射频收发模块。
The low frequency band data pass unit comprises a plurality of stubs which are connected to the data bus in parallel and are formed as printed circuit board (PCB) patterns.
低频段数据通过单元可包括多个短线，该短线与数据总线连接且被形成为印刷电路板 （PCB）图案，短线相互平行；
The low frequency band data pass unit comprises a plurality of stubs which are connected to the data bus in parallel and are formed as printed circuit board (PCB) patterns.
低频段数据通过单元可包括多个短线，该短线与数据总线连接且被形成为印刷电路板 （PCB）图案，短线相互平行；
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