查询词典 variable density system

The piston mathematical model of some type engines in topology optimization was founded using variable density method. According to the optimization area of the piston pin seat and the thrust face, the topology optimization of piston structure in this area was studied using the HyperWorks software premising the stability of skirt's distortion.

建立了某高速发动机活塞的变密度法拓扑优化数学模型，以活塞销座和推力面之间的区域为优化区域，在保证裙部变形稳定性的前提下，利用HyperWorks软件对该区域的活塞结构进行了拓扑优化。

In this text, we discuss the method of estimating parameter that the density of explains variable of having measurement error is not abridge, we inquire the covariance of y and e^ and we can get a formula as follows

本文要探讨的是在不限制有测量误差的解释变数的分布下估计参数的方法，首先探讨Y跟e^的共变异数关系，可以得到如下式子

Let the impact loads be transformed into simulated dynamic loads by the use of dynamic load coefficient ,taking this as a foundation the structural optimization mathematical model of ejection seat was established by applying the variable density method.

运用动载系数将冲击载荷转化为拟动态载荷，在此基础上用变密度法建立了弹射座椅结构优化数学模型，提出了冲击载荷作用下弹射座椅的结构优化设计方法，并进行结构优化设计实例计算，得到了能够满足冲击力作用的优化结构。

To coal sample in the outburst hole edge, we inferred double variable equations between σ〓 and volt V and pressure of methans P. Frequency, mineral matter, stack density, grain size and doping material would affect conductivity of coal.

对突出孔洞边缘样，导出了电导率与外电压V和瓦斯压力P的双变量方程；并讨论了频率、矿物质、堆密度、粒度和掺杂物对煤导电性的影响。

Consider now a lamina of variable density covering a region D in the xy-plane.

考虑一平面薄片，占有平面上的区域 D，其密度函数为。

Mainly, the article divides into six contents: system development background and method of exploitation, demand analysis, system analysis, system design, system implementation and conclusion. In demand analysis, has established first with the example model, and comes the detailed description through the active chart to use the example. Through the sequence chart and the VOPC chart, I completed the definition of boundary, control and data entity of the fore-platform in system analysis. The system design mainly has carried on the detailed design to kind of and the database.

在需求分析中，先建立了用例模型，通过文字和活动图来详细的描述用例，确定了前台子系统的各个功能模块；系统分析中，使用序列图和VOPC图完成了对系统运作过程中涉及的界面、控制、数据实体的定义；系统设计主要主要对类及数据库进行了详细的设计；系统实施中，对前台子系统的物理部署、实施环境进行描述，包括系统的主要界面和部分代码。

Secondly, the author completely combs and sums up the credit system at different stage. The thesis analyzes the transformation of China's credit system after the foundation of New China. The thesis compares the characteristics and performance of different credit system; understand the historical status of credit system, Summarizes the deficiency in order to improve credit system arrangement.Thirdly, by analyzing an example of how middle size enterprises finance, we conclude that middle and small size company can avoid credit admeasure by the innovation of credit system.

论文分析了从新中国成立至今我国商业银行信贷制度的变迁，通过对不同阶段信贷制度安排的特点以及绩效的比较，了解我国商业银行信贷制度的历史状况，并总结不足，以有利于今后更好的完善。3、通过一个中小企业融资的案例的实证分析，得出银行信贷制度的创新可以使小企业的信贷避免遭遇信贷配给，同时大银行利用平台贷款可以在小企业贷款中降低交易成本，获取比较优势。4、对商业银行信贷制度做了具体细致的研究。

Lastly, the thesis lays out the antetype of Technological Innovation Ability Evaluation Decision Support System , and designs the basic structure of the systems, which consist of man-machine conversation management system, problem processor syetem, modelbase management system, database management system, knowledgebase management system and methodbase management system. This thisis designs the database structure.

该体系结构由人机对话管理系统、问题处理系统、模型库管理系统、数据库管理系统、知识库管理系统及方法库管理系统6个相互关联的模块组成的系统；根据评价指标体系和指标的定义设计了企业技术创新能力评价的数据库结构。

An optical system of measuring system is constituted by a illuminating system and a magnifying system. The illuminating system adopts a far center illuminating mode to make the illumination unified. The magnifying system all adopts object far center optics path to eliminate the error for out of focus. The objective is a plan and apochromat to make image clear. The operator adjusts focus with parameters provided by computer.

论文分析了纤维细度测量系统的光学系统：照明系统采用远心柯勒方式，实现物面的均匀照明；成象系统采用物方远心光路，减少离焦对纤维细度测量的影响；物镜采用平场消色差物镜，消除因为象差引起的图象变形和不清晰，为纤维细度的高精度测量奠定基础；在图象清晰度判别中采用计算机计算参数结合人工调整的方法，既保证结果的客观性，又使系统简化。

Our main products include: Restaurant and Hotel system, luggage barrow system, sign cards system, baluster holder system, wine barrow system, room-service barrow system.

我们的主要产品包括：酒楼、酒店餐车系统，行李车系列，指示牌系列，栏杆座系列，酒水车系列，客房服务车系列。

"The operators will suffer a temporary decrease in the number of consumers and short message services as people may not like having to provide their ID cards for a phone number," Xu Junqi, vice-dean with the Policy-Making Institute of the Telecommunications Research Centre under MII, said yesterday.

信息产业部下属的通信决策研究院副主任徐俊其昨天说：&实行手机实名制后，人们可能不太情愿用身份证注册手机号，所以通信运营商会暂时面临用户减少和短信用户减少的问题。&

I don't believe in make-believe!

我不相信这些虚构的故事。