查询词典 by means of
- 与 by means of 相关的网络例句 [注:此内容来源于网络,仅供参考]
-
Afterwards,this paper presents typical station type selecting model by taking unidirectional three-stage/three-yard Marshalling station and bidirectional three-stage/six-yard Marshalling station as representation.At last,northern Xuzhou is applied to a numeral example to validate the effect of this method,which proves that station type selecting by means of comparing the total waste of wagon flow in the Marshalling station from the view of wagon flow structure is not only effective but scientific,meanwhile,this provides a scientific and effective decision-making measure for determining the scope and layout of Marshalling station.
在上述研究基础上,以单向三级三场和双向三级六场为代表,构建能力约束条件下的典型单双向系统的择优比对模型,并通过徐州北编组站进行实例验证,从中看出,从车流结构入手,根据各种车流在编组站所消耗总费用的高低来进行站型选择不仅切实有效,而且经济科学,同时,这也为全面定位编组站的规模和布局提供了一种科学有效的决策手段。
-
The response of a short single-wire line excited by EMP was theoretically investigated and experimentally validated by means of an EMP simulator.
研究了有界波电磁脉冲模拟器下短线缆效应的理论建模和实验方法。基于传输线模型计算了线缆在有界波电磁脉冲模拟器辐照下的电流响应。
-
In China, there is no research in the field previously. This thesis supported by the Ministry Advanced Research Foundation of China, make a basic study of the instrument. Its achievements read as follows:(1) A new analytic method based on the concept of an equivalent volume force presented in this thesis, which solve the problem of piezoelectric beam, is simple, clear and reliable. By means of it, the design parameters for QRS have been calculated and analyzed serially, i. e., optimum electrode configurations are chosen, the side ratio of beam is determined, and the formula of electrode location efficiency is derived.
在我国这方面的研究尚属空白,本文在兵器部预研基金项目的支持下,对这种器件进行了基础性研究,从而填补了国内空白,具体包括如下内容:(1)提出了等效体力概念,以此为基础建立了一种分析压电振梁问题的新方法——等效体力分析法,该方法物理图象清晰、计算简明、结果可靠,它可以对QRS的设计参数进行系统的理论分析。
-
As a new type of synthesis process of materials, self-propagating high-temperature synthesis rose at the end of 1960 s to get compounds in a short time by means of the combustion heat generated by reaction itself.
中文摘要:自蔓延高温合成是二十世纪六十年代末兴起的材料合成新技术,其显著特点是利用化学反应自身放热瞬间完成其它方法无法实现的材料的合成。
-
The four models were analyzed and normalized. We studied the procedure and method of building forest fire model base. Model base was build by object-oriented method based on category of model. Forest fire spreading models algorithm were implemented. We designed model dictionary base, model file base, and model knowledge base. Model base administration and maintenance functions were developed and implemented model file management, parameter management and knowledge management. The problems of interface between of model base and database were solved by means of model data control files. Model base ensured the availability of supporting for forest fire model suitability selection technology and forest fire model self-adapting updating technology.(3) Based on BP artificial neural network, we designed a frame construction of forest fire model selection of suitability. Forest fire model selection knowledge was produced through BP artificial neural network.
2建立了林火模型库建设的林火蔓延模型评价标准,根据模型评价标准和试验区实际情况,在42个林火蔓延模型中选择了目前最具有影响力和最具有典型代表性的Rothermel模型、王正非模型、加拿大模型和澳大利亚模型进行了解析和归一化处理;对林火模型库的建库过程和方法进行了研究,在林火模型分类基础上,采用面向对象的模型库表示方法建立了林火模型库;实现了林火蔓延模型算法,设计了模型字典库、模型文件库和模型知识库;开发了模型库管理与维护功能,实现了模型的文件管理、参数管理和知识管理;通过模型数据管理文件解决了模型库与数据库之间接口问题;实现了林火模型库对林火模型适宜性选择和林火模型自适应修正技术的有效支持。
-
Iron-based composite coatings were deposited on mild steel substrate by arc spraying cored wire with WC-CoNi ceramic powders. The abrasion wear properties were evaluated using a examined MLS-225 wet sand/rubber wheel tester. The microstructure, phase compositions and worn surface of the coatings were examined by means of optical, scanning electron microscopy and X-ray diffraction.
采用电弧喷涂含WC-CoNi金属陶瓷粉末的粉芯丝材,在低碳钢基体上制备铁基复合涂层,采用MLS-225型湿砂橡胶轮磨损试验机评价铁基复合涂层的耐磨粒磨损性能,利用光学显微镜、扫描电子显微镜和X射线衍射仪对涂层的显微组织结构、磨损表面及其相组成进行分析。
-
By means of the study of three types of main-switch, it shows that the circuit inductance of the modified ring-small disk main-switch supported by parallel metal bars is feasible to achieve appropriate main current.
经过对三种主开关结构进行实验研究,结果表明:改进的并联金属棒支座圆环-小圆盘型主开关的导通电感比较合适,可产生较好的主脉冲电流。
-
the authors analyzed and demonstrated such issues in the theory of monistic training as football player's stamina, long-distance runner's stamina, and hammer throw athlete's power capacity, found that in the explanation for this phenomenon by the theory of monistic training, there are obvious misunderstanding, wrong interpretation, and even garbled quotation and fallacy of composition, and revealed that the theory drew its conclusions by means of listing "facts" and "translating" science, and that its arguments were limited to superficially describing hypotheses put forward, but neither supported its conclusions, nor inherited any traditionally rational things.
中国女子网球队备战2006年&澳网&集训。。。摘要:对一元训练理论论据中足球运动员、长跑运动员的耐力问题和链球运动员的力量素质问题的分析和论证发现,一元训练理论对此现象的解释存在着明显的误解、曲解,甚至断章取义、以偏概全,揭示该理论运用列举&事实&和&平移&科学的方法来引申结论,论据只限于形象的描述所提出的假设,并不具备结论意义上的支撑作用,也没有继承传统合理的东西。
-
By means of solar energy resources research of xinjiang bazhou and analysis on carbon usage and greenhouse gas emission in carbon metallurgy process, a new concept named "non-carbon metallurgy by solar energy photovoltaic technology" was put forward.
通过新疆巴州太阳能资源调研、碳冶金碳素作用及其温室气体排放分析,提出了太阳能光伏非碳冶金理念,实现太阳能光伏非碳冶金的技术难点在于建立独立的能量——冶金体系。
-
Curing kinetics of epoxy resin and the effects of different compositions on curing reaction were researched by using the differential scanning calorimeters. Relationship between curing temperature and curing converting rate had been studied. Curing conditions for the system were determined. Modified nano-Al2O3/epoxy resin and core shell/epoxy resin composites were prepared by means of blending method. The influence of the composition on the properties was discussed. The thermal and dielectric properties of these composites were investigated using differential scanning calorimetry, Thermogravimetry and dielectric analyzer.
首先,论文通过差示量热扫描仪分析研究了环氧树脂与酸酐固化体系的固化反应动力学及固化工艺;然后,通过共混法和超声分散法制备了一系列纳米氧化铝/环氧树脂及核壳粒子/环氧树脂两相复合材料;进而通过DSC及热重分析仪测试了复合材料的玻璃化温度、热降解温度等热学性能,并采用介电分析仪测试分析了复合材料的介电常数、介电损耗等介电性能,讨论了组成对复合材料的热学性能及介电性能的影响。
- 推荐网络例句
-
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。