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A mathematical model that describes the transient flow is developed based on the conservation law of mass momentum and energy followed in the course of transient flow process of gasliquid phases.

根据气液瞬变流动过程中所遵循的质量、动量和能量守恒定律，建立了描述气液两相瞬变流动的数学模型。

The article describes the essential spares that you need to have so that your lawn mower continues to function as a new one.

本文介绍了至关重要的零部件，您需要有使您的草坪割草机继续功能作为一个新的1。

This paper describes the definition and simple classification of GIS,analyzes the technology system of GIS softwares and puts forward the lectotype foundations of GIS soft-wares.

阐述了地理信息系统的简单分类，分析了地理信息系统软件的技术体系，提出了地理信息系统软件选型的依据。

Paul describes his fellow soldiers: he, Leer, Müller, and Kropp are all nineteen years old.

保罗描述他的战友：他，里尔，穆勒，并Kropp都十九年岁。

In contrast, legibility describes how easily or comfortably a typ eset text can be read.

与之相对，易读性描述的是排印文本阅读时的轻松和舒适程度。

Chief among the candidates for extinction is the rare white lemuroid ringtail possum, a singular species that Flannery, the paleontologist, describes as "our panda."

在消失的物种中最具代表性的，是稀有的白狐猴浣熊负鼠，古生物学家 Flannery 描述为"我国的熊猫"。

In specific applications expression : in compressed natural language describes various examples of the basic algorithm, using MATLAB as a programming language, a series of the combined limit, the bonus points will be combined, one graphics area and the length of the horizontal curve equations, and curve tangent process, the rotary body size and shape combined several process issues.

在具体应用中的体现：以简练的自然语言描述了各实例的基本算法，运用MATLAB作为编程语言，实现了数列极限的求解、定积分的求解、平面图形面积及平面曲线长度的求解、求曲线切线的过程、旋转体体积的求解及其形成过程等几个问题。

This paper describes the goal, method and design of reliability life test for car transmission.

本文简述了轿车变速器可靠性寿命试验的目的、方法和试验设计。

This paper describes the principles and methods of extracting humic acid product from lignite.

论述了褐煤中提取腐殖酸产品的方法及原理。

In chapter 3, this paper describes the various models of the passive dampers for analysis and calculation taking account into the precision and other aspects, and points out the Maxwell model is enough to limn the characteristic of the fluid viscous damper under stress in most operating condition; in chapter 4, this chapter. further validates the rationality and advantage employing the fluid viscous damper in practical project and the reliability of the adopted model on the base of referring relevant experiments overseas and their data.

在文章的第三章，着重讨论了基于精确度等方面考虑而建立的被动阻尼器的各种受力分析计算模型，并指出Maxwell模型足以描述在大多数工况下粘滞阻尼器的受力特性；第四章则是在参考了国外的相关实验及其数据基础上进一步验证了工程上使用粘滞阻尼器的的合理性和优越性及分析计算模型的可靠性。

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。