电路板

Aimed at getting rid of big bulk, low precision, limited secular stability and high cost price the single star simulator used to be, while based on the practical demands in single star simulator project and combining with the technical specifications of star sensor for user, the paper proposes to use high stability adjusted digital light source as the core elements of the single star simulator, and describes development methods and development technologies for the whole system of the single star simulator from the view of project application.

论文主要针对过去研制的单星模拟器体积大、精度低、长期稳定性不够、成本高等缺点，结合单星模拟器的工程使用实际需要和用户星敏感器的技术指标要求，提出了一种数字式光源的设计方法，采用闭环控制并使用大规模集成电路模块，减小了光源体积(光源由三块核心电路板组成，尺寸分别110mm×110mm、100mm×100mm和30mm×30mm)提高了光源精度、提升了光源稳定性(光源连续工作8小时内的误差15.848%)和降低了光源成本，在此基础上，实现对以往单星模拟器诸多缺点的改进。

Our 2000 Series valves offer advanced circuit board technology inside.

我们的2000系列阀门提供先进的技术，内部电路板。

Our 2000 Series valve line offers advanced circuit board technology, inside the valves and manifold assemblies.

我们的2000系列阀系列提供先进的电路板技术，内部的阀门和多方面的集会。

On the basis of the working principles of b-ultrasonic apparatus and its probe, the essay makes an analysis of the causes and manitenance of crystal failure, lens fault, jacket damage, shell damage, cable leakage and circuit boards burned.

本文在介绍b超仪及探头原理的基础上，对晶体故障、透镜故障、护套损坏、外壳损坏、电缆线外漏和电路板烧坏等故障及其原因和检修进行了分析。

At the left side of the entrance, saw a huge board describing fitness dance classes available at this gym.

在左侧的门口，看见一个巨大的电路板，说明健身舞蹈班可在此健身。

With the development of electrical design,higher signal frequency,smaller PCB board and bigger routing density,the signal integrity becomes more and more important.

摘 要：当今飞速发展的电子设计领域，信号频率的不断提高，印制电路板变小，布线密度加大都使得信号完整性问题越来越成为一个值得关注的问题。

These are diatoms, single-celled phytoplankton with skeletons of silicon. Circuit boards of the future.

这里面有硅藻类，一种单细胞浮游生物，它们有着硅质的骨骼，这就是未来的电路板。

As is known, AMD made a single-valued selection in favorofproductsclass high-end by the association of two single chips on one PCB.

正如人们所知， AMD公司作出了单值选择有利于产品的一流高档由该协会的两个单晶片上的一个印刷电路板。

Only the X axis, Y axis and the small wheel on the dirt removed, and then smoke the ball吹去mouse ears dust board (with a soft hair brush to also line), in particular in mind to both sides of a few small round two electronic components on the吹去dust.

只需把X轴、Y轴以及小滚轮上的污垢清除掉，然后用吸耳球吹去鼠标电路板上的灰尘，特别要把记数小轮两旁的两个电子元件上的灰尘吹去。

Press the SPACEBAR to change the corner style while you are defining the board shape.

按空格键来改变角落风格，当您定义电路板的形状。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。