查询词典 vacuum

There are four basic constants in natural units system: Planck constant , speed of light in the vacuum c, the quality of any particle and electron's electric quantity e. Other units can be educed by the four basic units.

自然单位制有四个基本常数：普朗克常数、真空中的光速c、任意粒子的质量和电子的电量e，其它单位都可以由这四个基本单位导出来。

Anti-hot stamping film forming can only be carried out in the plane, while the aluminum vacuum forming can be carried out in the plane and concave.

烫印膜反烫成型只能在平面上进行，而真空镀铝成型可以在平面及凹面内进行。

We have a light beam travelling through a vacuum and falling on a glass plate.

由于屏上有缺口，在很远的墙上的暗背景上现出了光斑。

Media, such as media feed advance rate, UV Lamp intensity and platen vacuum force.

媒体，如媒体事先饲料率，紫外线灯强度和压板力量真空。

And that winding vacuum film plating system is just such a complex manufacturing system.

并且那个薄膜的镀金系统就是这样一个大机器制造的系统。

In order to keep your new Plenum Brand Vacuum Cleaner warranty in effect, you must use genuine Plenum Brand Filter Bags.

为了使你的某个品牌的吸尘器的保证有效，你必须购买正品的该品牌的过滤袋。

Objective To explore the positive effect of the ap plication of vacuum blood drawing technique in pediatrics.

目的：探讨真空采血技术在儿科中的应用效果。

Then,in the early 1940s, John Mauchly and J.Presper Eckert,Jr.,of the University of Pennsylavania designed and built a vacuum tube computer,which they called the electronic numerical inegrator and calculator;it was completed in 1945 and installedat Aberdeen Proving Ground,Maryland. ENIAC used 18000 electron tubes,which required tremendous amounts of power;its failure rate wa high and it was difficult to program because a plugboard was required.

那么，在20世纪40年代初，约翰mauchlyj.presperEckert先生和霍尔特，该大学设计建造了pennsylavania真空管计算机，它们被称为电子计算器、数值inegrator；这是1945年建成并installedat马里兰州的阿伯丁。eniac使用18000电子管，这需要庞大的权力；它的失败率偏高，难以以佤节目因为插件需要。

In this project, we will make a vacuum pump from common inexpensive plumbing parts.

在这个项目中，我们会作出真空泵从廉价的共同管道部分。

Some new method is presented in this paper: A. An Integrated parameters computation method to analysis asynchronous operation of the turbine generator is given, including the equivalence of short circuit and open circuit of field windings, deducing boundary condition of 〓 method and computing frequency parameters. B. A new memory structure for sparse complex matrix and a PCCG method based on it are introduced to save memory and computation time. C. An equivalent method of vacuum is presented, and effectively eliminate the effect of corner point and accelerate convergence of PCCG method. D. Coupling the computation of electromagnetic and temperature field is discussed and model for computing temperature field of the turbine generator rotor at asynchronous operation is built.

文中提出了以下新方法：(1)在失磁异步运行转子三维涡流场计算中提出了完整的参数计算方法，其中包括励磁绕组开、短路的等效，〓法边界条件的推导及频率参数的计算方法；(2)提出了铁心内空气域的等效方法，有效地解决了开槽引起的角点奇异问题，并提高了方程组的迭代收敛速度；(3)在〓法有限元模型中，创立了一种能节约内存、提高计算速度的压缩存储矩阵格式，并建立了基于该格式的方程组解法；(4)提出了涡流电磁场和温度场两种不同场计算的合理结合方法，建立了转子三维稳态和时变温度场的有限元计算模型。

Liapunov—Schmidt method is one of the most important method in the bifurcation theory.

Liapunov—Schmidt方法是分叉理论的最重要方法之一。

Be courteous -- even when people are most discourteous to you .

要有礼貌──即使当別人对你最不礼貌的时候。