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In this paper, a least-square collocation formulation for solving Helmholtz equation with Dirichlet and Neumann boundary conditions was established.

对于Helmholtz方程问题,其微分方程和边界条件可表示为法应用于Helmholtz方程问题的研究,建立了 Helmholtz方程问题的最小二乘配点格式,分别研究了Hdmholtz方程的波传播问题和边界层问题。

The mechanism of the least squares approximation that MFNN with finite nodes carried out on a given discrete point set is made, which, for the first time, results in an important theorem.

分析了有限规模多层前向网络用于离散点集上的最小二乘逼近的机理,首次给出了一个有关的定理。

Rigid PVC pipe production line is mainly used in the manufacture of the plastic PVC pipes with various tube diameters and wall thickness in the aspects such as the agricultural and nonstructural plumbing, cable laying etc. Thin set is composed of the conical twin-screw extruder, vacuum forming table , dragger, cutter, stirring up rack etc. The screws extruder and the extractor adopt the imported AC frequency employ the superior goods. The prime mover has the traction modes such as to claw, three-claw and so on. It may choose the saw blade cutting type or the planet cutting type. It is additionally attached with measuring apparatus and the intensifying device. The unit is of the reliable performance and high production efficiency. This company may allocate the special installation for the manufacture of the inner wall spiral coil and core ply blister tube set according to the clients requirements.

硬质PVC 塑胶管材出产线主要有阿谁与出产农用给排水、建筑给排水、线缆铺设等方面的各类管径、壁厚的塑胶PVC管材,该机组由锥形双螺杆挤出机、真空定形台、牵引机、翻料架等构成螺杆挤出机及牵引机采用进***流变频调速设置,真空泵以及牵引机电均采用优质产品牵引有二爪、三爪、四爪、六爪等牵引体式格局可选用锯片或者行星切割形式,另可计长及增厚装置,机组机能可靠,出产效益高,本公司可更具客户的要求,配备布置专用装置出产螺旋消音管以及芯层发泡管机组

The experiment utilized the invertible T slab member which in the actual project is used, according to the differences of the composite stratum and the second reinforced manufactured the different experiment members, adopt the way by steps to bring to bear the equipollent distribution loads with ordinary loam brick, have carried on equipollent distribution dead load test.

试验利用实际工程中正在应用的倒T形板构件,根据叠合层和二次配筋的不同制作各种试验构件,采用普通标准粘土砖分级施加均布荷载的方法,进行了均布静荷载试验。

And the operational condition was as follows: 100-200 mesh silica gel to be the stationary phase, solvent system of methlene chloride: ethyl acetate: ethanol = 80:35:5 to be the eluent, the flow rate of the eluent to be 2.0 mL/min, the feeding concentration of pristinamycins to be 2.26 g/L, the total loading amount of the silica gel to be 0.81 mg/g and the temperature to be 25℃.

优化后的柱层析操作条件为:选用100~200目的硅胶,二氯甲烷:乙酸乙酯:乙醇=80:35:5为洗脱剂,流速为2.0 mL/min,普那霉素的进样浓度为2.26g/L,硅胶的总负载量约为0.81 mg/g,温度为25℃。

This thesis is analyses to the concrete case with characteristic of typical functionalism and summarizes the characteristic of functionalism.

功能主义设计思想的特征包括两层含义:一是功能主义设计思想的特征;二是功能主义设计思想指导下的产品特征。

Situation awareness displays are built around GIS maps, with an enhanced 2D and 3D real time graphic layer, full video integration and event-driven tools for decision making support.

局势的认识,显示器围绕地理信息系统地图,具有增强的二维和三维实时图形层,全视频集成和事件驱动的工具,决策支持。

The results show that high content and uniform dispersed nano-alumina in composite coatings are obtained by the synergy of mined and Arabic gum.

结果表明:阴离子型表面活性剂十二烷基苯磺酸钠与阿拉伯树胶的协同作用对纳米氧化铝的分散效果最好,复合镀层中的纳米氧化铝含量较高。

The key idea of Incompleteness Theorem lies in the proof that aclass of strong subsystem of mathematics is incomplete.

真和可证的区别有两层意思:一是真和可证的命题集不是重合的,二是在形式算术中真不能作谓词而可证可以作谓词。

In 1984, Kirkman and Gaetani (1984) reported tightly bound NADPH in BLC, which then was also detected in the X-ray structure of BLC (Fita and Rossmann, 1985a). In the course of various sequencing projects a broad spectrum of catalase sequences from organisms of all kingdoms appeared in the public databases in the last 17 years e.g.

Vainshtein等获得了在3.5A 低等真核细胞中的过氧化氢酶的第一个电子云图,同时Eventoff 也得到了在2.5A处,用X-ray详细分析附面层控制图,1984年Kirkman 和报道了 Gaetani BLC中的紧密结合的还原型烟酰胺腺嘌呤二核苷酸磷酸

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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

The eˉtiology of hemospermia is complicate,but almost of hemospermia are benign.

血精的原因很,以良性病变为主。