The PWB is considered to be one component.
印刷电路板仅被看作为一个部件。
This handbook is the guide to help you to understand UL certification procedure clearly for PWB category.
本手册是帮助您了解向UL美华申请印刷电路板UL认证的流程与基本认知。
PWB samples were subjected to the solder float test per MIL-P-55110 and then the PTHs were cross-sectioned.
印制板试样必须经过MIL—P—55110标准浮焊试验，然后对金属化孔进行剖视。
The traditional inspecting methods for PWB depend on manual work a lot, which are very underdeveloped and face austere challenge.
传统印刷线路板的检测方法很大程度上依靠人工，这种落后的测试方法面临着严峻的挑战。
Equivalent heat conductivity of PWB is related to the thickness of PWB, the residual ratio of copper foil and the thickness of copper foil.
PWB的等效导热系数与PWB的总厚度、铜箔剩余率及铜箔厚度有关，设计时需考虑相关因素。
This paper has finished the theoretical investigation and part experiment investigation of using image PWB inspection, and has carried out system debugging.
本文完成了印刷线路板图像检测的理论研究和部分实验工作，并且进行了系统的调试。
This development of build up-type multilayer PWB is supported by HDI materials' technology, as well as processing technology for fine-pitch circuit formation and fine-via formation.
HDI材料技术、细间距电路形成和微导通孔形成的加工技术支持了积层多层板的开发。
Due to the wire width and the space between wires on PWB becoming finer the insulating capability of PWB is affected by ionic migration, that was not paid enough attention to for a long time.
由于印刷线路板的线宽和线间间隔的细微化，以往不引人注意的离子迁移现象已经对线路板的绝缘性能造成影响。
This paper describes the method of Lowering PWB noise using condenser film, can lower resonance between the power supply layer and the ground layer and power supply ripple voltage effectively.
概述了利用电容膜降低PWB噪声的方法，可以有效地降低电源-地线层之间的谐振和电源脉动电压。
This paper describes the method of Lowering PWB noise using condenser film, can lower resonance between the power supply layer and the ground layer and power supply ripple voltage effectively.
概述了利用电容膜降低PWB噪声的方法，可以有效地降低电源-地线层之间的谐振和电源脉动电压。
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