查询词典 shielding constant

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。

Through the introduction of the adjacent object direction angle and shielding angle,the ultimate adjacent objects are identified close to the direction of the adjacent object mask.

通过引入相邻对象方向角和屏蔽角，对方向接近的相邻对象进行屏蔽，实现对确定相邻对象方法的改进。

The preparation of electromagnetic shielding concrete adulterated short carbon fibers and graphite respectively have been introduced in this paper.

介绍了分别掺杂短碳纤维和石墨的电磁屏蔽混凝土的制备，研究了短碳纤维和石墨的含量对混凝土低频电磁屏蔽效能的影响，最后分析了短碳纤维的加入对石墨混凝土电磁屏蔽性能的影响机理，为将来设计高性能低频电磁屏蔽混凝土提供了依据。

Under the precondition of above analyses, this research compares the meteorite-stricken cases in planets and secondary planets of solar system, the "shielding" and "eroding" effect in aerosphere, the scale of small planets and movement rules, then briefly analyzes the basic reason of mass meteorite-stricken events occurred in earth history.

在上述分析的前提下，本研究从太阳系有关行星和卫星表面陨击现象对比，大气层的"遮蔽"和"侵蚀"作用，小行星的规模及运动规律等方面简要分析了地球历史上大规模陨击事件发生的基本原因。

Just imagine no need for the shielding against dangerous Alpha- Beta- rays, no need for high voltages and pollution of the environment caused by all the plastics and metal parts production.

试想想，没有对危险阿尔法屏蔽-β需要射线，无高电压，是所有的塑料和金属零部件的生产造成的环境污染的需要。

They are additionally covered with high-quality material for better shielding from oscillations caused by ambient noise.

为了更好地防止外部噪音产生的震动，它们另外覆盖着高质量的材料。

Our company specializes in electromagnetic compatibility and related products development and production, mainly provides anechoic chamber, installation and construction of shielding room, and the corresponding technical guidance and services for domestic customers.

公司成立以来，为了生产出高质量的产品，不断引进国外先进设备和仪器。现公司拥有冲床，磨床，折弯机，切割机等先进的数控设备十余部。一直以来，公司坚持以一流的管理，精湛的施工和良好的售后服务，赢得了较好的口碑。

Some problems that should be concerned or are often neglected in the design and construction of shielding enclosure and semi- anechoic chamber are presented.

介绍了屏蔽室和半电波暗室在设计和施工中需要注意的一些问题，例如：总体布局、供电照明、接地、通风、接口板、吸波材料选用、使用维护等。

It is also an anti-virus program, shielding you from e-mail worms like ILOVEYOU and Melissa.

也是抗病毒程序，保护你免遭象 ILOVEYOU 和梅丽莎那样的电子邮件虫。

Antoinette says the company's line of CNT sheets is finding application in electromagnetic shielding and antiballistic products.

Antoinette表示："我公司生产的碳纳米管片材系列可用在电磁屏蔽和反导弹产品中。"

Diabetes is a social disease that affects several million people worldwide.

糖尿病是一个社会性疾病，全世界有数百万人罹患此病。

I'll call you on Friday to see if we can reschedule our luncheon meeting at your convenience.

我星期五会给您打电话在您方便的时候我们重新安排我们的午餐约会。