二层的

In this case, dust of the same size can levitate at two different positions in the cathode.

另外还发现：在考虑极板有强电子束发射和尘埃粒子本身的二次电子发射时，同一大小的尘埃粒子能够悬浮在鞘层中两个不同的位置。

"With an accent like this I didn't get invited to play at many of the better golf clubs," jokes Mr Smith, who likes to play up his Liverpudlian credentials – credentials burnished by a stint on the junior side of Everton, the city's second team.

"由于我的口音，没多少人邀请我去好点的高尔夫俱乐部打球，"史密斯开玩笑说。他喜欢强调他的利物浦人身份——由于曾在该市第二支英超球队埃弗顿队二队踢过一段时间球，因此他的这一身份又多了一层光环。

Machine study for arithmetic multi-layer perceptron, it can recognize 2D dot matric graph, it is a good reference for p...

机器学习及人工智能中的多层感机的算法，可识别复杂的二维点阵图形，在实际的模式识别中很有参考价值。

In order to understand the mechanism of the final stage of spallation deeply, we carried out computer simulations of the damage evolution of two-dimensional microcrack system.

为了深入研究层裂损伤后期的破坏机理，在实验研究和理论分析的基础上，进行了二维微裂纹系统损伤演化的计算机模拟。

One layer is near the Earth space, the other is near the Moho.

利用2004～2005年Hi-CLIMB计划架设在藏南日喀则附近由28台宽频带数字地震仪组成的二维台阵的地震记录，应用双差层析定位方法对454个区域地震进行了精确重定位，共确定了340个地震的精确位置。

This design after determination frame layout, has carried on the level first the load generation of tabular value computation, extracts the wind load with the D value law the function, then uses the bending moment two methods of distribution to calculate the vertical load under the function structure endogenic force, and discovers most disadvantageous group of or a several group of endogenic force combination.

本设计在确定框架布局之后，先进行了层间荷载代表值的计算，用D值法求出风荷载的作用，接着用弯矩二次分配法计算出竖向荷载作用下的结构内力，并找出最不利的一组或几组内力组合。

This design after determining the frame layout, has carried on the level the first load generation of tabular value computation, extracts the wind load with the D value law the function, then uses the bending moment two methods of distribution to calculate the vertical load under the function structure endogenic force, and discovers most disadvantageous group or a several group of endogenic force combination.

本设计在确定框架布局之后，先进行了层间荷载代表值的计算，用D值法求出风荷载的作用，接着用弯矩二次分配法计算出竖向荷载作用下的结构内力，并找出最不利的一组或几组内力组合。

The comparison of results shows that the affection of second-order effect and the change of stiffness changing point should be noticed when designing and analysing multistory composite frame.

各种计算结果的比较说明，多层组合框架的设计分析应重视二阶效应和刚度突变分界点变化的影响。

Because this equation has the character of parabolic type in mathematics, it could provide a very accurate and powerful tool for computing fluid mechanics and heat transfer characteristics in micro-tubes after fully developed region.

我们为了方便计算程式的求解过程，将三维的圆形微管流简化为二维轴对称x-r方向的平面流场，并求解边界层方程式。

The nested parametric graphics and the hidden-line-remove algorithms are developed to support the parametric assembly representation.

提出的参数化图形多层嵌套、消隐区概念和参数化图形的二维动态消隐算法，能方便地支持产品装配图的参数化表示。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐