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Take the opportunity of this project, theoretical and experimental researches on the high-efficiency evaporator used in a large quick-freeze equipment have been done. The main work of experimental research is as follows:(1) Compare and analyze the influences of structural parameters on the heat transfer coefficient of an evaporator. The calculation results show that, under non-freezing conditions, the structure possessing the highest heat transfer coefficient is the one with circular fins, equilateral-triangle arranged small tubes and varying fin-spacing.

主要做了以下几方面的试验研究工作：(1)对不同翅片形状、管径大小、翅片管排列方式，以及是否带波纹等结构参数对蒸发器传热系数的影响进行了比较分析，得出在不结霜工况下，具有最高传热系数的蒸发器结构是圆翅片小管径正三角形排列等节距结构的结论。

In order to design lighter and faster hydraulic excavator, a rigid-flexible hybrid modeling method based on rigid multi-body dynamics and finite element method was put forward to study the dynamic characteristic of hydraulic excavator in its whole working cycle. The working equipment with characteristic of time-varying structure was taken as research object, and radial acceleration was computed as tags of key load.

为适应液压挖掘机高速、轻量化的要求，以具有时变固频特性的液压挖掘机工作装置为研究对象，提出了以角加速度判断时变结构的关键工况，利用刚性多体动力学和有限元方法对液压挖掘机在整个作业循环中的动力学特性进行建模和分析。

This paper makes a preliminary study of Chinese one-piece sleeve ,an element of nationality trappings,expounds its structural characteristics,the principle of varying its designs and related methods,sums up its several innovative designs and moldings,including sloping shoulder,sloping sleeve,raglan,and multi-piece styles along with their application rules.

中式袖结构是袖型体系中不可或缺的重要组成部分，通过对中式连身袖这一民族性服饰元素作探索性研究，阐述了连身袖结构的特征、结构变化设计的构成原理和方法，归纳出连身袖结构造型的几种创新设计形式，介绍了斜肩式、斜袖式、插裆式、插肩式、衣片分割式连身袖及其应用规律。

In this paper we analysis nonstationary random signal by a special processing tune-varying autoregressive moving-average model.

本文采用一种经过特殊处理的时变自回归滑动平均模型对非平稳随机信号进行分析。

A comprehensive network of rapid transit lines of varying capacity is to be implemented over the next fifteen years approximately.

改变能力的一个迅速经过线的广泛网络是在未来的十五年被大约实现。

Different portions of the raw data will have varying metadata associated with it.

对原始数据的不同部分将有不同程度与其关联的元数据。

For the principal component, namely the voltage stability analysis function, three kinds of nodal injection power modes are defined, i.e., the random varying direction of load, the response setting direction of generator and the ratio of active power component to reactive power component in load power, and a continuous power flow model that is easy to utilize and comprehend by dispatching center is built, based on this model three kinds of formulae to calculate the sensitivities of loading margin with respect to three kinds of nodal injection power modes are derived respectively, and on this basis the influence of nodal injection power mode on loading margin can be analyzed in order that the voltage collapse can be avoided by fast implementing early warning of voltage stability and adopting effective corrective control.

文章针对N-EMS的主要组成部分--电压稳定分析功能，定义了3类节点注入功率模式：负荷的随机变化方向、发电机的响应设定方向、负荷的有功和无功比例，建立了易于被调度中心运用和理解的连续潮流模型，在此模型基础上分别推导得到负荷裕度对3类模式的灵敏度公式，据此分析节点注入功率模式对负荷裕度的影响，以便能够快速进行电压稳定预警和采取有效的校正控制来避免电压崩溃。

This gives the projector the ability to detect and automatically recalibrate itself to varying ambient light conditions.

这个功能使得投影机具有根据不同的环境光条件进行检测和自动调节的能力。

Based on up_ and down_going wave decomposition and elastic wave power reciprocity theorem, this paper derives, in the lateral velocity varying case, linear prediction operators expression and the generalized spectral factorization equation for reflection dataset.

本文基于上下行波分解及弹性波互易定理，导出横向变速介质条件下线性预测算子的表达式和反射数据的广义谱分解方程。

The degree of reciprocity in negotiations should take into account the varying stages of economic development.

谈判中对等的程度应考虑到经济发展的不同阶段。

I am accused of being overreligious," she said in her quiet, frank manner,"but that does not prevent me thinking the children very cruel who obstinately commit such suicide.""

客人们在卡罗利娜·埃凯家里，举止就文雅一些，因为卡罗利娜的母亲治家很严厉。

Designed by French fashion house Herm è s, this elegant uniform was manufactured in our home, Hong Kong, and was the first without a hat.

由著名品牌 Herm è s 设计，这件高贵的制服是香港本土制造，是我们第一套不配帽子的制服。