变化系数

The performance of self-designed gas fired burner and its operation variables according to different oxygen consumption coefficients were studied.

对自行设计的燃气燃烧器的燃烧性能和根据不同的氧气消耗系数确定的试验工况变化进行了研究分析，并在燃煤锻造炉改造中进行了试用。

Empirical formula for capillary water up speed is power equation and the experience coefficients reduce with the increasing of oil content.

毛细水上升速率随时间变化关系可用乘幂方程拟合，经验系数随含油率升高而减小。

The major works are as follows: 1 The 3-D numerical model of U-sharp flow passages is set up. The single-phase fluid flow and heat transfer are simulated for the U-sharp smooth and rib-roughened flow passages with FLUENT software. Their performance curves, temperature field and velocity vector are obtained and the local heat transfer and flow pressure-drop distribution along flow passage are analyzed. It is revealed that the ribbed flow passages can enhance heat-transfer and make the temperature more uniform, but it increases the pressure-drop to more extent. 2 The influences of diaphragm depth, channel width and board spacing on the performance are investigated.

建立了层叠式蒸发器U形流道的3维湍流模型，用FLUENT软件对尺寸相同的U形光滑流道和肋化流道中单相流体的传热和流动进行了数值模拟，得到了两种流道的传热和阻力性能关系曲线及速度矢量图、温度场，分析了光滑流道和肋化流道的局部换热系数及沿程压降变化，结果表明流道的肋化能有效的增强传热，而且使流体的流动和传热更加均匀，但也较大地增大了阻力。

A mathematical model of the direct chill casting process for superlight Mg-Li alloy (LA141) slab has been developed using the finite differential method. Thermal boundary conditions including primary and secondary cooling conditions, have been selected based on knowledges of the physical process and the literatures. The variations of heat transfer coefficient between slab and dummy block interface resulting from the deformation of the slab have been considered.

中文摘要：运用有限差分法，对超轻Mg-Li合金（LA141）板坯直冷连铸过程温度场进行数值模拟，根据实际过程的物理现象以及文献资料确定包括一冷区、二冷区在内的边界条件，并且考虑底模与铸坯之间随着铸坯的变形而引起的换热系数的变化。

It has been found that friction and wear rate of chromium oxide coating can be effectively decreased by water lubrication because of the change of the main wear mechanisms caused by water lubrication.

结果表明：水润滑可以有效地降低氧化铬陶瓷薄膜的摩擦系数和磨损率，主要原因是水引起主导磨损机制发生变化。

This paper presents a new chlorine decay model adaptable to the real multi-source network, using Epanet-msx simulation module, comparing the differences in the concentration of chlorine caused by using the same or different chlorine decay rate coefficient of the treated water from different water plants, and then taking the discrepancy of the chlorine decay rate coefficient into consideration will be able to reflect residual chlorine concentration and changes in the network more realistically.

通过建立符合实际工况的多水源余氯衰减模型，运用Epanet-msx水质模块进行模拟运算，对比不同水厂余氯衰减系数同一化处理和差异化处理对管网余氯浓度造成的差别，可以看出差异化处理将能更真实地反应管网中余氯浓度的分布和变化情况。

The numerical analysis results show that displacement response is periodic and synchronized with excited input current. The influence of linear magnetostriction coefficient, amplitude and frequency of excited current on the displacement response is investigated.

计算结果表明位移响应是周期的，并与电流变化同步还分析了材料的线性磁致伸缩系数及电流峰值和频率对输出位移的影响。

The changing amplitudes of stress and deformation of spine redu...

在系数为0.08的阻尼情况下，脊柱的应力与变形的变化幅度将降低50%左右。

The caustics phenomena of electromagnetic wave propagation in concave reflector, the singularities of caustics, and the method of

40174032的一部分，得到如下结果：论文分析了利用Maslov方法求解非均匀介质中波动方程高频近似解的基本原理和求解过程，构造了介质系数只在一个方向变化时波动方程高频近似解的通用计算公式。

The phonon spontaneous emission causes the decoherence of the qubit. We discussed the relatoion between the decoherence time and the Coulomb binding parameter,the couping strength, the confinement length, and the conefficient dispersion.

由于声子的自发辐射，造成量子比特的消相干，讨论了消相干时间与库仑结合参数，耦合强度，受限长度，色散系数的变化关系。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。