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Examinations of steady status and analysis of dynamic experiments have been conducted on Band-Tube evaporator and Parallel-Flow condenser using R134a refrigerant. The steady examination show that the model error was under the allowable error, The inlet mass and enthalpy disturb experiments indicate that the subsection model ,be good at reflecting the change of parameters of the heat exchanger, accord with the basic principle of thermodynamics theory and the actual work status.

在进行仿真试验时，以使用R134a作制冷剂的管带式蒸发器和平行流式冷凝器为对象，完成了稳态仿真计算、试验和动态仿真分析，稳态计算结果和试验数据对比表明，其误差在允许范围内；进口质量和焓值的扰动试验结果表明：本文所建的区段式换热器仿真模型，能很好的反映换热器性能参数的动态变化，与系统热动力学理论和冷凝器、蒸发器的实际工作过程基本一致。

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 inlet and blade-to-blade flow fields of a centrifugal impeller were measured using two-dimensional laser Dopller anemometer in...

本文用二维激光多普勒测速仪测量了离心叶轮进口和旋转叶片通道内的流场。

In order to reduce dimensional size, the ZS2 valves have discarded the installation angle bar and the three feet on the inlet and outlet valve bodies are used for installation

为减小体积尺寸，ZS2系列多路换向阀取消了安装角铁，利用进、回油阀体上的三个底脚直接安装。

Based on engineering design method and combined with numerical simulation,an axial symmetry supersonic inlet with boundary layer bleed was designed.

应用工程设计方法，结合数值模拟，设计了一种带有边界层吸除型式的超声速轴对称进气道，对进气道内流场进行了数值模拟研究，并且进行了风洞实验。

The hot water outlet and cold water inlet are identified on the back panel of the heater.

这种类型热水器的热水出水口和冷水进水口位于热水器的面板后部。

The shutoff valve with the test cock is to be mounted on the inlet side of the backflow preventer.

带测试旋塞的关闭阀应该安装在防回流阀的进口侧。

Main structures of plenum pulse bag type collector are as followers: box body and bag compartment, dust store bin, wind inlet and outlet (including screw conveyer and cinder valve), ladder, baluster, air passage system (including offline pneumatic cylinder, electromagnetic pulse valve, compressed air bag), de-dusting controller and so on.

气箱脉冲式袋除尘器的主要结构是，主体由箱体和袋室，灰斗、进出风口（包括螺旋输送机和卸灰阀），爬梯、栏杆、气路系统（包括离线气缸、电磁脉冲阀、压力气包等）、清灰控制器等。

Finally, the engine performance test results on the engine test bench show that the inlet , exhaust and turbo charging system can meet the engine performance requirement.

最后通过整机台架性能试验说明，所采用的进、排气增压系统能满足设计要求。

Nowadays, it is largely used in ironworks and cement plants, etc. If we change its spray gas with nitrogen, improve inlet gas of cleaning tube and bleeder value; it can be fit for gas cleaning in steel-making firms and ironworks.

假如将其中的喷吹气源改成氮气，并将除尘筒内的进气、出料阀进行适当改造，该系统完全可用于炼钢、钢铁厂的煤气除尘，因此本系统具有很广的应用范围。

However, computer forensics technology can pursue intrusion, repair the leak of security, consummate the security structure, but also can consummate the law correspond to computer crim...

因而，计算机取证技术的研究对于打击计算机犯罪、追踪入侵、修补安全漏洞、完善计算机网络安全体系具有重要意义。

I think that's maybe right,but I 'm not sure.

我想那是对的，不过我也不能肯定。