多道

In the end of the paper, simulating the different energy gamma photons response through the nude NaI crystal detector and getting the response in 137Cs window from the different kinds of radionuclide, such as the response of 238U、 232Th、 40K and 137Cs itself in 137Cs window, getting the response in NaI multi-channel gamma spectrum from different nuclides.

本论文是利用蒙特卡罗方法模拟伽玛光子在NaI多道伽玛能谱响应，本论文介绍了蒙特卡罗方法以及该方法在核物理的应用，介绍了蒙特卡罗方法在计算机中的实现以及一种应用软件—MCNP—4B，最后具体模拟不同能量的伽玛光子在裸晶体NaI中的响应，得到NaI多道伽玛能数据中~(137)Cs窗中天然放射性核素，如~(238)U、~(232)Th、~(40)K，以及~(137)Cs本身在~(137)Cs窗中的响应，得出~(238)U、~(232)Th、~(40)K、~(137)Cs的响应函数。

Introduce the system structure design of virtual multi-channel analyzer, particularize the functions of every modules and its software implementation method.

介绍了虚拟多道分析系统的系统结构设计，详细说明了虚拟多道各模块的功能及其软件实现方法。

First is enhances the boiler the heat energy transfer rate,(1) changes the vertical chimney to the horizontal-type chimney, reduces the speed of flow, Increase the time which the actuating medium and the boiler hot flame doing heat change;(2) changes the high temperature system sole medium sole heat transfer area to many kinds of medium the multi-channel heat transfer area(2-6 medium, 2-6 heat transfer area, this article takes four medium, 4 heat transfer areas confer elaboration), the increase heat transfer flow path through many times heat absorption,Lets the pot furnace coal flame heat energy as far as possible much transmit gives the actuating medium, Enables the quantity transfer rate from the present 60%--75% enhances to is bigger than 95

第一是提高锅炉的热能转移率，（1）将立式烟囱改为卧式烟囱，降低流速，增加工作介质与锅炉热焰气的热交换时间；（2）将高温系统单一介质的单一换热区改为多种介质的多道换热区（2—6种介质， 2—6道换热区，本文取四种介质，4道换热区加予论述），增加换热流程，通过多次吸热，让工作介质尽可能多地把锅炉煤焰气的热能传递给工作介质，使能量转移率从现在的60%--75%提高到大于95

In order to overcome the disadvantage of volume effect and improve prospecting precision of MT, the paper puts forward a multi-channel telemetry method of stratum resistivity for linearity processing exploring depth and electromagnetic frequency in the local area, which creates a crresponding relationship between stratum resistivity and sounding line, and a multi-channel observation system is designed accordingly to explore the resistivity of underground ledge.

为克服大地电磁勘探中"体积效应"的缺点，提高探测精度，提出多道遥测地层电阻率法，该方法是在一个局部区域内，将勘探深度和电磁波周期进行线性化处理，使得地层电阻率和测深曲线建立对应关系，并据此设计了一个多道探测地下矿层电阻率的观测系统。

MPPF is the most optimal forming method, but it is expensive to achieve. More steps of MPDF can approximatively achieve the forming effect of MPPF.

多点压机成形是理想化的成形方式，但设备造价昂贵，多道次多点模具成形可以近似实现多点压机成形效果。

The results of simulation experiments for single channel data or arbitrary channel of multi-channel data show the clearer event, the better wave shape and the higher SNR compared with the conventional convolution filter and common SVR based on RBF. So it is possible that SVR based on Ricker wavelet kernel function is applied to suppressing noise in seismic prospecting data.

对单道记录或多道记录中任选道的仿真实验表明，与传统的基于径向基核函数的支持向量回归及褶积滤波方法相比，使用本方法去噪后的同相轴更为清晰，波形恢复得更好，信噪比也较高，因此有可能将其应用于地震勘探记录的去噪处理中。

This pater analyses clou of many fortified lines from aseismatic design s and constructions,aiming to summarize experiences and analyse thoughts,so that it can provide guidances to constructural designs and constructions.

从结构抗震设计及建筑施工实例中分析了多道设防防线的中心思想，总结了在工程设计和工程施工中多个环节实施多道设防防线的具体措施。

Both multi-point press forming and multi-step multi-point die forming make the full use of multi-step forming.

多点压机成形和多道次多点模具成形充分利用多点成形的柔性特点，实现了对板材变形路径的控制。

Finally, by the deposit welding experiments of a single-track and multi-layer part and a multi-track and multi-layer part, the test results show that the measures are effective.

进行了单道多层和多道多层的堆焊试验，试验证明所提出的方法有效。

Self-fluxing Fe-Cr-Ni-B-Si alloy prowders are laser clad on medium carbon steel substrate of dimensions 80×35×10mm〓. The investigation results of this clad layer are: micro-defects, micro-cavity and occluded forin substance, are the micro-cracks and crack resourses in clad layer; crack of coating propagates along the boundary of two kinds of eutectic sutructure; The included angle θ between the cracking direction and laser scanning direction in multitrack overlapping clad is smaller than that in one-track clad because of crack propagating along crystalline growth direction and crystalline direction in overlapping zone being different from it in one-track clad.

在调质态的45〓钢表面，采用预置粉末法进行FeCrNiBSi合金的多道搭接激光熔覆，对其熔覆层进行分析表明：多道搭接激光熔覆层裂纹扩展方向与激光扫描方向间的夹角θ与单道熔覆时相比明显变小，前者θ0°，后者θ角基本都为90°，这主要是因为多道搭接时，搭接区结晶方向发生了变化以及裂纹沿结晶方向扩展所致；激光熔覆层裂纹大多是以覆层与基材交界面的孔洞、熔覆层内不同方向共晶团间的显微缩孔、夹杂物的边界等三种显微缺陷作为裂纹源，并沿低熔点物相形成元素偏析造成弱化膜的共晶团界面扩展延伸。

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