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The effect of the number of jets and the pitch angle of jet on recovery coefficient of diffuser were analyzed, it is shown that the appropriate choice of parameters such as the number of jets and the pitch angle of jet can effectively control the flow separation in the diffuser.

文中还分析了不同射流孔数和射流倾斜角对于压力恢复系数的影响，发现选择合适的涡旋射流孔数及其射流倾斜角等参数，可以更有效的控制扩压器内流动分离。

The normal angle of attack and bank angle were corrected according to the aerodynamic coefficient errors between the estimated values and the normal ones.

研究了气动模型存在误差情况下高超声速再入机动飞行器的制导律设计问题。

The internal friction angle and the cohesion of the bank soil will greatly decrease after long soil soaking during the flood period, which results in a decrease of the stability coefficient.

洪水长期浸泡后，河岸土壤的内摩擦角和内聚力有较大幅度的减小，河岸稳定系数减小；对于粘土岸滩，洪水迅速上涨期间，水压力对河岸的稳定性是有利的，而洪水骤降时，河岸崩塌的几率增大；对于非粘土岸滩，洪水缓慢上涨期间，河岸稳定性变化不大，而洪水缓慢下降后，岸滩稳定系数减小。

In this paper The relation between optimal coefficient of performance and rate of pumping heat of an endoreversible Carnot heat pump is derived.

本文导出内可逆卡诺热泵的最佳性能系数与泵热率间的关系。

Cycle process, efficiency of heat engine, refrigerator coefficient, Carnot cycle, thermodynamic second law and its physical meaning.

循环过程，热机效率，致冷系数，卡诺循环；热力学第二定律及其物理意义。

The lead-less piezoelectric ceramic composition is prepared through sintering at relatively low temperature, say, 1190 deg.c or even lower, and has good piezoelectric characteristic, practical plane electromechanical coupling coefficient kp, high Curie point and no lead and lead compound contained.

本发明的制备工艺能在较低温度下，如1190℃或更低温度下烧结无铅压电陶瓷组合物，使制备的无铅压电陶瓷具有好的压电性、可实用的平面机电耦合系数kp和高的居里温度，制备工艺过程中不含铅或铅的化合物。

The theories proposed by Wilson (1994) were adopted to describe the fundamental behaviors of temperature and variation of suction of soil. The Darcy's law and Pick's law described the flows and evaporation of water respectively. Some proposed assumptions including the characteristic curve of volumetric water content and hydraulic conductivity were only related to the suction of unsaturated soil. The coefficient of latent heat for water was a linear function of temperature; and the heat conductivity was calculated according to the equation proposed by De Vries.

对于土体的温度和吸力变化特征，采用Wilson提出的理论加以描述，在此理论中，分别利用Darcy和Fick定律描述水和蒸汽的流动规律，土水特征曲线和水力传导系数假定仅仅相关于非饱和土吸力，水的潜热系数是温度的线性函数，温度传导系数采用De Vries建议方程加以计算。

Because natural gas and water have different relaxation time and diffusion coefficient,we can use DSM and SSM to identify them.

由于天然气和水的弛豫时间和扩散系数的差异，可以利用差谱分析法和移谱分析法来识别天然气。

And the mean coefficient of variation in peak area was 1.11%±0.45%(mean1 S.D.).

本文对我们所用的色谱分析条件进行了讨论。

The quantitative relational expression between the coefficient of pressure loss and the Froude number is obtained.

通过研究得出了输送管内废塑料颗粒压力损失系数与弗劳德准数的定量关系式，废塑料颗粒速度与单位管长压力损失的关系，以及水平弯管和垂直上升弯管中颗粒速度与单位管长压力损失的关系。

Finally it offers the analysis of the fault-tolerance system as well as its test verification.

这样，运行于空间环境中的系统的设计目标就是在保证系统实时性

However, it is still difficult to find out the real reason of the increase of the keratinized gingiva during the orthodontic extrusion whether it is due to the proliferation of the gingival tissue or to its elastic nature, that is because the proliferation of the fibroblasts as well as the connective tissue changes in volume and the intra-fibers spaces were all immeasurable in most of the studies.

然而，仍然难以找到真正的原因增加的角化牙龈在正畸挤压它是否是由于扩散的牙龈组织或其弹性性质，这是因为增殖的成纤维细胞以及作为结缔组织的变化量和内部纤维空格都是不可估量的，大多数的研究。