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By combining the interval mathematics and the finite element analysis, the mass matrix, damping matrix, stiffness matrix and the external loads are represented as interval matrices and vector.

通过结合区间数学和有限元分析，结构质量矩阵、阻尼矩阵、刚度矩阵和外载荷列向量采用区间矩阵和区间向量来描述。

By means of combining the structure analysis of finite element with optimization algorithm,the finite element model and optimization mathematics model of the multi-serial uniform load thrust bearing were established by APDL.

将有限元结构分析与优化算法相结合，应用APDL建立了多排均载推力滚子轴承的有限元模型及优化数学模型。

As to the work about theory analysis, at first, the paper describes the atomizing and humidifying process of the centrifugal nozzle with firing pin type, high pressure and little aperture and liquid physical properties. Later, combining with the structure characters of this kind of nozzle, the paper studies on the theory of the atomizing and humidifying process by three phases, which is water film forming phase, water film falling into pieces phase, and heat and mass transfer between water and air phase in turn.

理论工作方面，首先描述了撞针型高压小孔径离心式喷嘴的雾化加湿过程和液体的物理性质，然后结合撞针型高压小孔径离心式喷嘴的结构特点，将其雾化加湿过程分三个阶段进行机理上的研究，这三个阶段依次为液膜形成、液膜初次破碎及二次雾化、水与空气的热湿交换。

Then an improved design method of resonant tank combining first harmonic approximation and simulation in time domain was proposed.

基于所提出的方法设计的参数建立一台220 W的样机，实验结果证实了所提出改进型设计方法的正确性和可行性。

Following is the main contribution of the dissertation. 1 Based on quartile and first order differential, a new outlier detection algorithm is presented, Experiments show that the method combining with low pass filter can remove gross error and unwanted frequency components.

本文的主要工作与创新点在于： 1）将分位数方法与一阶差分法相结合，提出了一种基于一阶差分的粗差剔除方法，该方法与低通滤波器的结合可以有效去除两相流压力波动信号中的粗大误差以及信号频带以外的频率成分。

Combining with theoretical analysis and laboratory test s,flexure characters of epoxy asphalt surfacing on steel decks are investigated.

采用理论分析与室内试验相结合的方式，研究了环氧沥青混凝土钢桥面铺装的弯曲特性。

In this paper, I have made some research and innovative achievement in the following aspects:(1) In order to overcome the weakness of premature convergence and the disadvantage of local seardhing ability appearing in GA, an improved genetic algorithm which combining with Heuristic algorithm is proposed and applied in the flow shop scheduling problem.

在本论文课题的研究及应用过程中，作者做了以下主要研究工作和成果：(1)鉴于遗传算法容易出现过早收敛的问题以及局部搜索能力不强的问题，提出一种结合启发式算法改进的遗传算法，并将其运用于流水车间作业调度问题的求解。

Aim: To study the feasibility of aneuploidy diagnosis using coelocentesis combining with quantitative fluoresce polymerase chain reaction in early pregnancy.

目的：探讨应用荧光定量PCR法检查早孕期胚胎胚外体腔液胎儿细胞染色体的可行性。

In this article two functional modes of the Fly-back Converter (Continuous Conduct Mode and Discontinuous Conduct Mode) are particularly analyzed, which include their characteristics, applications, the critical pattern of two functional modes is argued, both the exact boundary from the angle of circuit parameters is crystallized, at the same time, basic principle of PFC under the DCM mode is introduced, which settle theoretical basis for the subsequent design; by establishing the mathematic model of the converter, a further investigation of the configuration is made, qualitatively and quantitatively, analyzed to settle exactly theoretical basis for the subsequent emulation and the experimental parameter; from the angle of steady-state analysis, the transfer function of the system is deduced to establish dynamic small-signal state equation, emulating the system with the help of matlab, then according to the simulation result and the theory of PFC revise the system, lastly, we adopt the project which add a zero-pole compensator to the voltage loop, by this way, a satisfied system performance is gained and the PFC scheme is ensured successfully; finally, based on the previously-done work, we combining with the situation of specific design requirement, acquired the numerical value of each unit devices in this converter

详细分析了反激式变换器的两种工作状态，连续模式(Continuous Conduct Mode ，简称CCM)和断续模式(Discontinuous Conduct Mode，简称DCM)以及各自的特点、应用场合，论证了两种工作状态的临界模式，从电路参数的角度明确了二者的界限，同时还介绍了DCM模式下PFC的基本原理，为后面的设计奠定理论基础；通过对整个变换器系统建立准确的数学模型，对此变换器的电路结构做了进一步的研究，定性、定量地分析了变换器各部分的工作状态，为仿真和实验参数的确定以及电路参数的优化提供理论依据；从稳态分析的角度，为系统建立了动态小信号状态方程并推导出系统的传递函数，利用matlab对系统进行仿真，进而根据仿真结果以及PFC的相关理论对系统进行校正，采用在电压环加入零点—极点补偿器的设计方案，得到了满意的系统特性并且保证了PFC的顺利实现；最后，在前面所做工作的基础上，结合设计要求计算出此变换器系统中每个元器件的数值，利用Pspice对其进行了仿真、优化，然后根据仿真结果搭建了硬件电路。

Combining the discusses of flysch prototype basin which is called Baryan Har basin, we know that the Baryan Har basin is a large-scale back-arc basin resulted from intensively depression of back-arc area. It formed after tectonic setting transforms to pressure from extension and is at the same time as development of Yidun island arc.

同时，结合对沉积复理石的原型盆地——巴颜喀拉海盆性质的讨论，以为巴颜喀拉海盆是在松潘-阿坝地区构造背景由拉张转化为积存之后，在义敦岛弧发育的同时，弧后区强烈坳陷形成的大型弧后盆地。

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。