人们因为工作计划，家庭计划等等，就是不能换网络。
People have work plans, family plans, etc, etc, that they just can't switch.
道格说确实是有网络的，所以如果真搬家去伯利兹的话还是可以继续写博客，只是换种方式——用脚在白色沙滩上写。
Doug said that yes, they do have Internet, so if we move to Belize I can keep blogging, but I'll be doing it with my toes in the white sand.
另一部分原因可能在于，日本的每个移动运营商都有一套自己的网络标准，所以，用户要换运营商就一定得换手机。
And it is partly because each Japanese network has its own standard, so customers must buy new handsets when they switch.
本文在抉点设计原理的基础上提出一个快速、灵活的换熟器网络综合方法。
This work presents a rapid, flexible method about heat exchange network synthesis based on the pinch design principle.
我想学到更多网络媒体的知识，于是我想换一份新工作给自己一个学习的机会。
I wanted to learn more about Web publishing, and I thought the new job would provide a useful education.
前些年，一位加拿大青年用小小的曲别针换了一栋别墅，引起网络上的一片沸腾，也让无数“换客”争相仿效。
A few years ago, a young Canadian exchanged a villa with a paper clip which created much of a stir on the Internet, and numerous people followed his suit afterwards.
本文阐述了夹点理论的基本原理，及其在换热网络优化综合中的应用。
The basic principle of pinch technology and its application in the heat exchanger network synthesis are illustrated.
改造后的实际运行表明，该网络具有换热效果好，灵敏度低(对外界变化的适应能力强)，阻力降低等优点。
The reconstructed network has been per - forming very well into operation with high efficiency, good adaptability to varying operation conditions, and low pressure drop.
换热网络是能量回收利用中的一个重要系统。
Heat exchanger network is an important subsystem of energy recovery process.
并利用一工业实例说明如何应用夹点技术进行现有换热网络的分析和改造设计。
An industrial example is presented to show how to use pinch technology to analysis the existing heat exchanger network and to retrofit it.
依据夹点理论通常会产生以最大限度地回收系统能量为综合目标的换热网络综合，同时会产生一些闭合的匹配回路。
The synthesis of Heat Exchanger Network (HEN), aimed at reclaiming maximum system energy by means of pinch theory, often results in closed match loops.
因此，优化换热网络结构，最大限度的回收热量，意义重大。
So, optimizing the heat exchanger network and maximizing the energy-saved are of great importance.
网络购物的专家，却不会换打印机的墨盒。
Being an expert in Internet shopping, yet incapable of replacing the printer cartridge.
一些早期建成的化工企业，由于当时技术的落后，换热网络设计不合理，造成能源的浪费。
In some chemical industry enterprises, for the low technology level at the time they were built, the heat exchanger network is poorly designed which leads to the waste of energy.
改造后的实际运行表明，该网络具有换热效果好，灵敏度低(对外界变化的适应能力强)，阻力降低等优点。
The reconstructed network has been per - forming very well into operation with high efficiency, good adaptability to varying operation conditions, and low pressure...
夹点法作为一种简便的、实用换热网络合成方法已在实际工程中运用广泛并取得了良好的效果。
Pinch method is a simple heat exchanger network synthesis method, it has been widely used in practical projects and achieved good results.
提出柔性换热网络在初始设计阶段，考虑网络投入运行后，实施清洗维护时序安排的理论框架。
A theory framework is presented for flexible heat exchanger network (HEN) synthesis considering the scheduling of cleaning maintenance at initial design stage.
在换热网络的运行过程中其操作条件时常发生变化，旁路优化控制是调节物流出口温度、节能降耗的有效途径。
During the operation of heat exchanger networks (HEN) with varying operating conditions, bypass optimal control is considered an effective method to adjust outlet fluid temperature and save energy.
实践证明，应用夹点理论指导换热网络的综合会取得很好的经济效益。
The industrial practice prove that the pinch technology is highly efficient for the heat exchanger network design.
换热网络的优化设计一直是化工系统工程最活跃的研究领域。
The optimal design of the Heat Exchanger Network (HEN) is the most active field in the chemical systematic Engineering.
本文给出解析法求换热网络中最大热回收量的数学模型及计算方法。
The Paper gives the mathematic models and method of calculation of the maximum heat recovery in the synthesis of heat exchanger networks.
提出了一种关于内流系统流动换热的网络计算法。
A network technique to predict the internal system of flow and heat exchange is presented.
在换热网络中考虑经济因素和工程质量因素，建立换热网络多级综合模糊评价模型。
In heat exchanger networks, the fuzzy appraisal model of heat exchanger networks is set up considering quality and economic factors.
网络换物：借用网络来与他人交换书籍、音乐和电影光碟。 。
Swap online. Use sites to trade books, music, and movies with others online.
运用夹点技术分析了某化工厂中型合成氨装置的换热网络，发现现有换热网络中有较多能量利用不合理的地方。
The heat exchanger network of a medium ammonia plant has been analyzed by means of pinch technology, and some waste of energy use in the present heat exchanger network has been found.
对玉米加工厂淀粉车间正常运行时，进行数据采集、整理，绘制物流图、换热网络图。
Data are collected and sorted when the starch processing workshop is running normally, then logistics map and heat exchanger network are also got.
指出了目前中央冷却系统在换热网络布置和设备选型方面的优缺点。
It also points out the advantages of the two kinds of Central Cooling System in disposition of heat conversion network and in choice of equipment.
节约燃料气的措施为：优化常减压换热网络；
The measures for optimizing the use of fuel gas are:improving the atmospheric and vacuum heat exchange network;
节约燃料气的措施为：优化常减压换热网络；
The measures for optimizing the use of fuel gas are:improving the atmospheric and vacuum heat exchange network;
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