工作条件

This thesis contributed to the comprehensive study of the Finite-Difference Time-Domain method and its application to the numerical computation of radiated electromagnetic fields in switched mode power supplies. The work includes mainly three parts: the study on the performance of PML absorbing boundary condition applied to pseudo low frequency electromagnetic problems; the validation of the FDTD method with PML absorbing boundary conditions and the corresponding computer software based on the numerical study of the electromagnetic field of an electric dipole antenna, and its application to the numerical computation of radiated electromagnetic fields in switched mode power supplies; the development of an improved alternating direction implicit finite-difference time-domain method.

在综合前人工作基础上，本文对时域有限差分法及其在开关电源辐射电磁场数值计算中的应用进行了系统的分析和研究，其核心内容包括：伪低频电磁场数值计算中PML吸收边界条件性能的研究；基于基准问题—电偶极子天线三维辐射电磁场，验证了本文构造的基于PML吸收边界条件的三维FDTD法及其计算软件，并应用于高频开关电源辐射电磁场的数值分析；提出了一种改进的交替方向隐格式时域有限差分法。

The Proto is an all-purpose tire that performs great on grass, dirt and even tarmac, the HB Block tires have been specially designed to work at their best in a variety of off-road racing conditions, including dirt, grass and astroturf, while the HB Khaos tires have been designed specifically to suit a range of off-road racing conditions, and are perfect for loose dirt, grass, and damp tracks.

原是一种多用途的轮胎执行伟大的草地上，泥土，甚至停机坪，乙肝块的轮胎经过特殊设计，工作处于最佳状态的各种越野赛事的条件，包括泥土，青草和astroturf虽然在哈尔滨Khaos轮胎已专门设计，以适应各种越野赛车条件，是完善的松散泥土，草，潮湿的轨道。

Several aspects of the method, such as crucible treatment, mass of sample, cineration condition, analysis method, calibration graph and ionization depressor dosage were improved and optimized.

对实验中坩埚处理、试样量、灰化条件、分析方法、工作曲线及电离抑制剂用量等技术条件进行了优化。

An axiom definition of similarity measure based on Li's related works, which constrains the necessary conditions of a similarity measure, is proposed. Then two new methods are introduced, and proved to satisfy the axiom defined above. Finally, an example of their application to pattern recognition is given.

在Li(2003)的相关工作之上提出一种改进的Vague集相似度量公理化定义，指出一个相似度量必须满足的约束条件，然后引人两种新Vague集相似度量方法，并证明它们满足这些公理化条件，最后给出一个它们在模式识别的应用实例。

This includes, but is not limited to, labor, materials, equipment, services, facilities, information technology, and special categories such as an inflation allowance or cost contingency reserve.

活动费用估算的详细支持文件包括：活动工作范围描述；估算的基础文件；假设条件；约束条件；估算结果的可能范围等。

Compared with the known results,the nonlinearity is allowed to change sign and is involved with the first-order derivative explicitly.In particular,the boundary condition includes the Dirichlet boundary condition and Robin boundary condition.

与现有工作相比，我们所考虑的动力方程不但非线性项可变号，而且包含一阶导数项，所考虑的边值条件更具一般性，比如可以包含Dirichlet及Robin边值条件等。

The electromotor is the hard core of the antenna tilting mechanism circuit of the equipment. According to the basic failure rate model and working failure rate model of the national military standards, the electromotor working reliabilities are analyzed under different working conditions and environments.

中文摘要：某装备天线翻倒机构电路的核心部件是电动机，根据国军标中电动机的基本故障率和工作故障率模型，分析了在不同条件和工作环境下电动机的工作可靠性，并对结果做了比较和分析。

The feeding head can rotate around axial Z and axial X or Y. With the help of Siemens NC system, which can overcome the limitations of feeding heads working space, we can make axle sleeve and so on. It can be used to repair irregular shape products in laser cladding, such as metallic sheath. Using 3D coaxial feeding head, large area laser refabrication was carried out in metallic sheath.

由于原数控系统是非开放性的，不宜直接在原有系统上进行二次开发，考虑到现有条件，采用单片机控制二步进电机以实现送粉头能绕Z轴转动和绕水平轴转动，加上原有数控系统的在Z轴方向上的运动配合使送粉工作头具有三维空间工作能力，它克服了普通送粉头工作空间的限制，同时还具有粉末流束焦点可调功能。

Through the authorized strength of construction organization design, can consider all-sidedly the various specific execution conditions that will build project , foster strengths and circumvent weaknesses land will decide reasonable the programme of construction, determine construction order, construction method and labour organization, reasonably comprehensive arrangement will be under construction surely progress plan; To build the design scheme of project the reasonability on economy, the scientificness on technology with in enforcement the possibility on project expounds and proves offer basis; To build the unit planned and construction enterprise construction working plan and enforcement of authorized strength of capital construction of authorized strength to be under construction prepare to work to plan offer basis; Can will build construction and the design of project;, the construction organization work of technology and all construction arrangements of economy, front and rear and construction enterprise and specific project more combine closely; Can the construction unit and cooperation unit, department and department that directly attends , stage and stage and course - the relation between course coordinate better.

通过施工组织设计的编制，可以全面考虑拟建工程的各种具体施工条件，扬长避短地拟定合理的施工方案，确定施工顺序、施工方法和劳动组织，合理地统筹安排拟定施工进度计划；为拟建工程的设计方案在经济上的合理性，在技术上的科学性和在实施工程上的可能性进行论证提供依据；为建设单位编制基本建设计划和施工企业编制施工工作计划及实施施工准备工作计划提供依据；可以把拟建工程的设计与施工；、技术与经济、前方与后方和施工企业的全部施工安排与具体工程的施工组织工作更紧密地结合起来；可以把直接参加的施工单位与协作单位、部门与部门、阶段与阶段、过程-与过程之间的关系更好地协调起来。

As the bearing in engine is working in condition of high temperature and high pressure, to find out the performance of the main bearing of I.C. Engine in Western China more accurately, a model of the main bearing was built by considering it as a bearing with TEHL (Thermo Elastic Hydrodynamics Lubrication). The influent of low environment pressure on main bearing was studied with thermo and elastic hydrodynamics considered.

由于发动机轴承是在高温高压条件下工作，为了更加细致和准确地研究发动机主轴承工作的性能，本文还建立了考虑低气压影响的发动机主轴承的热弹性流体润滑模型，分析了考虑弹流和热的情况下，低气压对发动机主轴承的工作性能的影响。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。