查询词典 EMI

The results show that the electroless copper plating bath have good stability and long periods, and the Cu deposition have lower surface resistance, good uniformity, better EMI shielding ability and well adhibition to the substrate. It can well fit the QFN packaging process.

结果表明，所得到的化学镀铜工艺稳定性好、镀液寿命长，铜镀层具有表面电阻率低、均匀性好、电磁屏蔽性能良好、与基底间的结合力高的特性，完全可以满足QFN封装工艺的要求。

There are two models at present:(1)Thermal erosion and/or chemical metasomatism change the lower part of lithospheremantle into asthenosphere.

这一结论与热化学侵蚀或化学交代机制使岩石圈地幔改造为EMI印记实现减薄作用不一致。

During 2008 the recordings, which feature works by Bizet, Gounod, Donizetti and Rossini, will be extracted from their protective covering, and EMI, the successor to Gramophone, which donated the discs, will issue them on CD.

唱片捐赠者是当年的留声机公司老板阿尔弗雷德·克拉克，他要求在100年后打开这两只瓮，"这样，那个年代的人就可以听到我们这个时代最出色的声音"。

Shenzhen Horizon Electronics Co.,Ltd.is the authorized distributer of Murata which is among the top 500 companies in the world. The products of Murata such as MLCC, EMI noise suppression products, EMI filters, Resonators, Saw filters, Antenna switch is widely used in mobile phones, mp3,digital camera, computers and other kinds of electronic products.

深圳市鸿容通电子有限公司是村田电子元器件授权经销商，村田电子制造所是世界五百强企业之一，世界被动元器件的领导者，其生产的多层片状陶瓷电容，电感，磁珠，陶瓷震荡子，陶瓷滤波器，声表滤波器，天线开关，压腔震荡子等产品广泛的应用于手机， mp3，数码相机，电脑等世界上各类电子产品中。

Based on the EMI coupling paths model of the off-line PWM switched mode power supply, sensitivity analysis of the component parameters in the model can be conducted and the key component parameters will be found. This method can be used in the EMC debugging and the EMI forecasting of power electronics equipment.

在本文对离线式PWM开关电源电磁干扰传播通道所建模型基础上，可以实现对模型中各元件参数灵敏度的分析，找到关键影响参数，为开关电源电磁兼容调试和电磁干扰预测提供有效的指导。

In this paper, a detailed study on the measurement of the frequency characteristics of EMI coupling paths, the model of EMI coupling paths and the equivalent EMI noise model of an off-line PWM switched mode power supply is introduced quantitatively and qualitatively.

本文以一台小功率离线式PWM开关电源为例，对开关电源传导电磁干扰耦合通道的特性测量、电路模型的建立和分析、开关电源对电网等效电磁干扰模型的建立进行了研究。

To understand the source of EMI and the propagative way of EMI clearly the key protection of sensitive receiving circuit for EMI can be carried out.

通过对电磁干扰源的明确认识，对电磁干扰引入路径的清楚了解，针对电磁干扰敏感的接收电路进行重点保护。

To understand the source of EMI andthe propagative way of EMI clearly the key protection of sensitive receiving circuit for EMI can be carried out.

通过对电磁干扰源的明确认识，对电磁干扰引入路径的清楚了解，针对电磁干扰敏感的接收电路进行重点保护。

Among the various conductive fillers, carbon fibers have been proved to be a good candidate for EMI shielding. However, the electrical resistivity of a carbon fiber is much higher than the metal filler, so it must to use a greater number of carbon fibers in order to achieve the same shielding effect. In recent years, the Electroless plating is the new techniques of surface treatment of carbon fibers used to improve the electrical conductivity of carbon fiber. The copper-coated and nickel-coated carbon fibers have been proved to be a good candidate for EMI shielding.

导电高分子填充材料多使用碳纤维、碳黑及金属粉末，其中碳纤维具有高导电性、低密度及复合材料之补强特性，故本研究碳纤维作为填充材料，将碳纤维经过无电电镀处理，使其表面分别披覆金属镍及铜，增加碳纤维之导电度，混掺於聚丙烯高分子基材中，制成具有电磁波屏蔽功能之高分子复合材料，研究不同高分子成型方式与金属镀层对於碳纤维电学性质及复合材料电磁波屏蔽效益之影响。

Secondly, using the model of the EMI, the optimizing the performance of the EMI of the Garfield is researched. Aim at the ARM7TDMI of the Garfield without the CACHE, using the burst transfer of the SDRAM, some caches are added in the Emirs the data or instruction can be perfected to the caches.

然后在外部存储控制器模型的基础上，对其架构进行优化，针对GARFIELD系列芯片使用的ARM7TDMI内核没有缓存的特点，利用SDRAM的突发传输特性，在外部存储控制器中加入CACHE，将数据或指令预取到CACHE中，减少对SDRAM访问的等待时间，从而提高系统性能。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。