pwb

Testing method of PWB short - circuit failure

印刷电路板短路故障测试法

Research on Application of Plasma Treatment Technology to Microwave PWB Manufacturing

等离子体处理技术在微波印制板生产中的应用研究

Modeling line capacity planning for PWB assembly systems and its approximate solution algorithms

PWB装配线综合生产能力计划模型及其近似求解算法

From Base Board to Functional Board - Trade of Embedded Component PWB

从基板到功能板&埋入元件基板的趋向

Evaluating PWB Design , Manufacturing Process and Laminate Material Impacts on CAF Resistance

PWB设计制造工艺和基材对耐CAF影响的评估

Study on the Metals in PWB of Waste Computers

废旧电脑印刷线路板金属成分溶出的试验研究

Theauthor thus obtained a PWB boron diffusion source of practical value .

得到了实用的PWB高硼微晶玻璃扩散源。

Reliability Evaluation Item that PWB User Require

PWB用户要求的可靠性评价项目

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。

Study on Isolation and Characterization of Multicopy Plasmid pWB 29

多拷贝数质粒pWB29的分离及其特性的研究

I met this kind of PWB with PTH stamp on it .

我在工作中碰到了有这种要求的客户。

Development of PWB and Advanced Technology in Production PURIFICATION OF ORGANIC WASTE GAS FROM THE WIRE PRINTED DISTRICT OF PRINTED CIRCUIT BOARD PLANT

印制线路板发展趋势及生产中的先进技术线路板生产丝印区有机废气的净化

Black hole technology is used to replace for electroless Cu process for plating through-hole wall in laminated PWB .

黑孔化技术取代印制板孔金属化电镀的化学键嗣工艺。

Next , the PWB surface is exposed to UV energy until a B-stage cure is achieved .

然后，UV固化至B-阶段；

Treat the PWB with sodium hydroxide at the proper temperature first , and dissolve the metallic elements using nitric acid .

在适当的温度条件下，先采用氢氧化钠处理印刷线路板（声卡，显卡，网卡，主板），再利用硝酸将其中的金属成分溶出。

A model for PWB production planning and equipment changeover scheduling in multi product , flexible manufacturing environment at the aggregate level is developed .

提出了多产品柔性制造环境中市场需求确定动态且完全由生产满足的条件下PWB装配线的再设计模型。

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。

Ordinary girl The stamp hole on PWB is very common , but the PTH stamp hole is unusual .

印制板的邮票孔是很普通的加工方法，但金属化邮票孔就不常见了。

PWB of older people in different marital status were significantly different , PWB of elderly with the spouse alive was higher than those without spouse .

不同婚姻状况的老年人心理幸福感差异有显著统计学意义，有配偶的老年人心理幸福感水平高于无配偶者。

So the key technology to recycle and reuse the waste computer is to solve the problem of reusing the PWB innocuously and changing it into new resource .

因此，以线路板的无害化、资源化利用为研究重点，是解决废旧电脑再生利用问题的关键技术之一。

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 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。

An empirical study was made on the theoretical construct and multiple index assessment of the psychological well being ( PWB ) the community elderly , based on previous theoretical framework and research evidences .

在已有研究证据和理论框架基础上，本文对社区老年人心理健康状况（PWB）的理论构念及其多指标评价模型进行实证研究。

This paper Summerizes the embedded integrated passive PWB and their choice for non-vacuum processing and vacuum processing , and still discussion on business expanding trend of embedded integrated passive .

概述了埋入集成无源元件印制板以及它们的非真空加工和真空加工的选择，还讨论了埋入集成无源元件业务的拓展趋势。

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。

Advanced packaging technology represented by CSP and the development of build up-type multilayer printed wiring board ( PWB ) that make such high-density packaging possible are making greatly progress .

以CSP为代表的先进封装技术和可以实现高密度封装的确积层多层板的开发已经取得了很大的进步。

Spacings-Please note that conformal coating is suitable as long as it is used on a PWB with the same ANSI laminate grade that it is rated for .

实在不明白，保形角涂料使用时，如何用相同的ANSI碾压等级？不知此ANSI碾压等级在电路板上指什么意思？

This paper summarizes the impedance controlling PWB design technology including base material , base material design , copper foil , PWB design and manufacture / measure technology / simulation technology etc. It is suitable for high frequency electronic machine .

概述了包括基材、基材设计、铜箔、基板设计和制造/计量技术/模拟技术等适用于高频电子机器的阻抗控制PWB设计技术。

This paper summarizes the PWB technology roadmap in ' 2003 year Edition Japan Mounting Technol - ogy Roadmap ', including trend of mother board roadmap , substrate roadmap and embeded component PWB .

概述了2003年度版日本安装技术路线图中的PWB技术路线图，其中包括母板路线图、基板路线图和埋入元件PWB的动向。

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。