Adopt single some earth, multipoint earthing, mix earth, simulation circuit earth, digital circuit earth introduce PCB printed circuit board earth mentality of designing, design method, skill.
并通过单点接地、多点接地、混合接地、模拟电路接地、数字电路接地介绍了P CB印刷电路板接地的设计思路、设计方法与技巧。
BeagleBoard is supported by a large community and its design documents, including architecture drawings of the printed circuit board (PCB) for use in manufacturing, are freely available for download.
BeagleBoard受一个规模很大的社区支持，而它的设计文档，包括生产用的印刷电路板(PCB)的架构草图，均可免费下载得到。
The following components are mounted on the Control Printed Circuit Board. The components are secured to the PCB by soldering unless otherwise noted.
以下元件安装在控制印刷线路板上。除非特殊说明，否则元件通过焊接固定于线路板。
Low surface insulation resistance (SIR) of a printed circuit board (PCB) can degrade the performance of the circuits on the board considerably.
印制电路板的表面绝缘电阻(SIR)低会大大降低电路板的电路性能。
Since A/D and D/A converters are the key components in seismic instruments, their circuit designs and printed circuit board (PCB) layout have a near relation with the feature of the instrument.
转换器、D／A转换器是地震仪器的核心部件，其电路和印刷板的布置及设计直接影响到仪器的精度和指标。
The article introduced the concept of on-line test, expounded the flow and theory of on-line test for PCB(printed circuit board), and analyzed several technics of on-line test.
简单介绍了在线测试这一概念；阐述了印刷电路板在线测试的流程和原理；分析了几种在线测试中的工艺性测试。
The design rules and observing proceedings are presented from the layouts, wires placing and grounding of the printed circuit board (PCB) aiming at the EMC design of switch power supplies.
针对开关电源印制电路板的电磁兼容性设计，从PCB的布局与布线、接地等方面提出设计原则及注意事项。
Machining of PCB (printed circuit board) is a typical process of two dimensional multi hole.
印刷电路板pcb的加工是二维多孔数控钻的典型。
The modal parameters of the printed circuit board (PCB) were calculated using finite element method, and the weaknesses of PCB were found using effective modal masses and mode shapes.
采用有限元方法对印制电路板进行了模态分析，依据有效模态质量和模态振型分析了振动环境下配制电路板的薄弱环节。
The quality of printed circuit board (PCB), what is as an important component of modern electronic equipment, makes a direct impact on product performance.
电路印刷板PCB板作为现代电子设备的重要组成部分，其质量直接影响到产品的性能。
The part alignment is an important step for automated optical inspection of printed circuit board (PCB).
在印刷电路板的自动光学检测中，被检对象的空间对准是一个关键步骤。
Waste printed circuit board(PCB) was pyrolyzed in a self-developed fixed bed batch vacuum pyrolyzer and the pyrolysis products were analyzed.
在自行设计的间歇式固定床真空热解装置中热解废印制线路板（PCB），对热解产物进行了分析。
Failure of blind via is one of the main causes of an open circuit in printed circuit board(PCB).
盲孔开裂是导致印制电路板（PCB）电气断路的主要原因之一。
This text analyses that earth noise and electromagnetic reasons and countermeasures penetrated emerge in the printed circuit board signal earth design of PCB.
本文分析pcb印刷电路板信号接地设计中产生接地噪声及电磁幅射的原因和对策。
By electromagnetic theory analysis, this paper presented a planar hollow coil current transformer based on printed circuit board (PCB).
通过电磁理论分析，提出了一种基于印刷电路板(PCB)的平面型空心线圈电流互感器。
The problems of 14 points TSP and optimal moving path for printed circuit board (PCB) were solved.
并求解了14个点的TSP问题与印刷电路板(PCB)数控钻走刀路线优化问题。
The second substrate includes a power plane deposited at a position of a component mounted to the printed circuit board (PCB) to transmit power to the component.
第二基板包括电力平面，该电力平面安置在组件的被安装到印刷电路板的位置处以向组件传输电力。
In a typical printed circuit board (PCB), accounting for less than 3% of the total price of the components may account for 40% of board space.
在印制电路板的典型装配中，占总价格不到3%的元件可能会占据电路板上40%的空间。
Moreover, some basic rules of high-speed printed circuit board (PCB) design were discussed.
最后，本文还对高速印刷电路板（PCB）设计的一些基本规则进行了探讨。
The core of PCB (printed circuit board) tester is testing algorithm, which directly determines the testing functions and speed of PCB tester.
印刷电路板(简称pcb)测试机的测试算法是PC B测试机的核心，它直接决定测试机的测试功能和测试速度。
With the development of semiconductor process technology, nowadays a system on a PCB (Printed Circuit Board) which is composed of several ICs can be integrated into a chip.
随着集成电路制造工艺的飞速发展，人们已经可以将原先用各种电路搭建的板极系统集成在一块芯片上。
A method for the determination of six inorganic anions on the surface of Printed Circuit Board (PCB) by non-suppression ion chromatography was proposed in this paper.
本文提出了一种利用非抑制型离子色谱法测定印制电路板表面六种无机阴离子污染物的方法。
With the development of Printed Circuit Board (PCB), liquid photo imageable etching resist ink has become the prime process technology of the fine line graph facture.
随着印制电路板(PCB)行业的飞速发展，液态光致抗蚀油墨已逐渐成为精细导线图形制作的主要方法。
Thermal fatigue life of lead-free solder joint of Air-conditioner PCB (Printed Circuit Board) under the form of THT (Through Hole Technology) is studied.
本文对空调器印刷电路板(PCB)通孔插装形式无铅焊点的热疲劳寿命进行了研究。
Printed Circuit Board (PCB) is information carriers integrating various electronic components. It is also the key unit of electronic products.
印制电路板(PCB)是集成各种电子元器件的信息载体，是电子产品的关键部件。
The law of strength change of fiberglass sheets in FR-4 printed circuit board(PCB) recycling with supercritical fluid CO2 is researched.
文章对超临界CO2流体回收FR-4型线路板过程中玻璃纤维布强度变化进行了研究。
Printed Circuit Board (PCB) is the most important part of the MCU application system.
印刷电路板pcb是单片机应用系统的核心部分。
Based on the avalanche effect, a kind of kilo-volt nanosecond pulsers has been designed, by using microwave PCB (printed circuit board).
基于雪崩三极管雪崩效应，研制出了一种数千伏、纳秒级脉冲源。
Because of the thermal distortion, the solder check position has be shifted during Automated Optical Inspection (AOI) for the PCB (Printed Circuit Board) assembled.
在组装的印制电路板自动光学检测中，由于印制电路板的热变形，造成检测中焊点位置的偏移导致测试失败。
Because of the thermal distortion, the solder check position has be shifted during Automated Optical Inspection (AOI) for the PCB (Printed Circuit Board) assembled.
在组装的印制电路板自动光学检测中，由于印制电路板的热变形，造成检测中焊点位置的偏移导致测试失败。
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