查询词典 in the mass

And in the heat and mass transfer process, the mass will be transferred from the water film to the air all the time, while the heat transfer direction is likely to be changed.

研究发现，随着饱和器内工作压力的增大，饱和器出口空气更容易达到饱和，但空气的绝对湿度降低了；并且在整个传热传质过程中，质量一直从水膜传向空气主体，而热量的传递方向则有可能发生改变。

The effect of the inlet parameters of air, air mass flow rate and spray water rate on the performance of closed cooling tower is discussed in the paper. A mathematical model for evaluating heat and mass transfer performance of closed cooling tower is set up. The analytical solution of differential equations is derived.

目的 分析闭式冷却塔内各参数，即空气焓值、含湿量、冷却水温等的分布情况；探讨空气入口参数、空气质量流量、喷淋水量对闭式冷却塔冷却性能的影响规律。

The anomalously low friction phenomenon is one of the typical dynamic phenomena in the deep block rock mass,reflecting the inconsistent and inconsecutive dynamic characteristics of deep block rock mass.

不规则超低摩擦现象是深部块系岩体典型动力学特征现象之一，集中反映了深部块系岩体非协调、非连续的动力学特性。

The thesis can be divided into five parts as follows: First, the structural characteristics of finned-pipe evaporator are analyzed. After selecting suitable microelement controller, the heat-transfer and mass-transfer processes are analyzed for every microelement under the conditions of dryness, wetness and frostiness. Based on previous equations, some parameters of frostiness are confirmed and the frost-growing model is set up under frost condition. Some hypotheses are postulated and with the help of the equation of mass-conservation, energy-conservation and momentum-conservation, the evaporation model which fits in the dynamic simulation is built, which set a solid foundation for system simulation. Second, the starting and stopping behaviors under disturbed condition are analyzed and calculated by using the dynamic concentrative parameter model, which gives some advice to better prescribe refrigeration system and set theoretic foundation for carrying out automatic control of refrigeration system. Third, the normal running process is analyzed and calculated by means of rational matching theory, which gives some advice on how to better understand the parameter change under steady state and the affection of inlet-parameter on evaporator. Fourth, the simulation software with dynamic characteristic is designed, which can be applied to calculate thernio-parameter of cryogen, air humidity and frost thickness under different initial and boundary conditions, and to carry out dynamic simulation under conditions of dryness, wetness and frostiness, at the same time, to achieve detection and simulation at any stage from starting to stopping.

本文的主要内容如下：1对翅片管蒸发器结构特点进行分析，选取适当的微元控制体，就干、湿和霜工况下对每个微元分别进行传热传质分析，基于经验关系式确定霜的有关参数，对于霜工况下的霜生长建立模型，经适当假设，运用质量守恒、能量守恒和动量守恒方程建立适合动态仿真的蒸发器数学模型，为系统仿真奠定基础； 2对蒸发在大扰动下的开、停机过程，运用动态集中参数模型进行分析和计算，为更好地描述制冷系统运行的全过程奠定基础，同时也为制冷系统实现自动控制提供一定的理论基础； 3对蒸发器正常运行过程，运用动态分布参数和参数间定量耦合的观点来分析和计算，为更好地了解稳态工况下各点参数的变化情况及各入口参数对蒸发器动态特性的影响即蒸发器性能对各参数变化的敏感性； 4编写翅片管蒸发器动态特性仿真计算程序，可以计算不同边界条件和初始条件下的制冷剂热力参数、空气温湿度和霜厚度分布场，实现对翅片管蒸发器在干、湿和霜工况下的动态仿真。

When the volume of liquefied petroleum gas is measured with a volumetric flowmeter and the relative density is measured manually with a pressure densimeter,the mass cannot be calculated in accordance with the existing standard for mass calculation.

当液化石油气体积采用容积式流量计测量，相对密度采用压力密度计手工测量的计量方式时，依据现有的质量计算标准，其质量无法进行计算。

The left ventricular internal dimension at end diastole, interventricular septal thickness at end diastole and left ventricular posterior wall thickness at end diastole were measured in the parastemal long axis view by transthoracic two-dimensional echocardiography, and to calculate left ventricular ejection fraction with Teichholtz formula and left ventricular mass with modified Devereux formula, left ventricular mass index=LVM/body surface area. From the apical four chamber and two chamber view, the basical segment and middle segment of interventricular septal, left ventricular lateral wall, anterior wall and inferior wall were obtained by tissue Doppler imaging, Regional left ventricular relaxation asynchrony index was calculated.

应用二维超声心动图在胸骨旁左心室长轴观测量左心室舒张末期内径、室间隔和左心室后壁舒张末期厚度，采用Teichholtz公式计算左心室射血分数，采用Devereux校正公式计算左心室心肌质量，左心室心肌质量指数=左心室心肌质量/体表面积；在心尖四腔心和心尖两腔心切面，应用组织多普勒成像获取室间隔、左心室侧壁、前壁和下壁的基底段和中间段8个心肌节段沿左心室长轴运动的速度频谱，测算左心室局部心肌松弛不同步性指数(regional left ventricular relaxation asynchrony index， AI)；在心尖四腔心切面，应用彩色M型多普勒超声心动图测量左心室舒张早期血流传播速度。

Therefore, the point of mass fire system and the role of the sensitivity of the first decision of its weapons systems in the status and role of the point of weapons of mass system of fire safety system design study has important military applications, the value and social significance.

所以，点传火系统的功能首发性和作用敏感性决定了它在武器系统中的地位和作用，对武器系统的点传火系统进行安全性设计研究具有重要的军事应用价值和社会意义。

In the case of deformation and oscillation of side wall, we have proposed a new form of distribution of added mass for simulating the hydrodynamic pressure. The direction of response acceleration of the tank wall has been also taken into account for simulating inertia force of added mass with more accuracy.

因此，本文提出了用于表述一种新的附加质量分布规律的经验公式，并且考虑了储液罐壁动力响应加速度的方向对液体所产生惯性作用力的影响，从而更加真实、准确地模拟了储液罐与液体的流固耦合作用问题。

The data mining algorithm, which calculates the radius of gyration of unit-mass point around the centre of mass in the phase space, can distinguish the fault parameter from the chaotic time series output by the tested system.

提出了一种基于相空间重构和数据挖掘算法的复杂电子系统故障诊断方法，采用计算相空间中各个单位质点绕其质量中心的旋转半径的数据挖掘算法识别被测系统的故障参量。

The energy equivalent to the mass of a particle at rest in an inertial frame of reference; equal to the rest mass times the square of the speed of light.

在一个惯性坐标系中与物体静止质量相当的能量；等于静止质量乘以光速的平方。

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。