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This paper starts with the analysis of power loss of Asynchronous Motors, discusses the performance characteristics, energy-saving theory, energy-saving effects, anti-EMI of protectors and other problems that should be noticed when three-phase Asynchronous Motor switches from △ connection to Y connection.

本文从分析异步电动机的功率损失入手，阐述了三相异步电动机Δ-Y切换降压运行的工作特性、节能原理、节电效果、节能保护器应采取的抗干扰措施以及其它应注意的问题。

In this paper, the power-saving operation of the asynchronous motor under different kinds of loads is analyzed theoretically. With the thyristors, the power-saving operation under low voltage is presented.

对电动机在不同性质的负载情况下，对电动机降压节能进行了理论分析，利用晶闸管改变电路电压，实现电动机的降压节能控制。

In the paper, relationship between oil-saving and material-saving during melti ng aluminium is presented.

论述了铝熔炼过程中节油与节料的关系。

The article makes a preliminary analysis of high oil consumption industrial sections in China at present, gives an introduction to oil-saving technical measures and policies abroad,and advances oil-saving suggestions for China in view of technical progress, national legislation and policy formulation.

对我国当前用油消耗量过高的产业部门进行了初步分析，介绍了国外在节油方面的技术措施和政策，从技术进步、国家立法和制订政策等方面提出了我国节约用油的若干建议。

The results shown that the oil-saving rates of fuel oil and lubricating oil are 5 % and 50% respectively by using GRT energy-saving oil additive, it have reached the level of same kinds of products in 80's from abroad; the cylinder wear of DONGFENG truck and JIEFANG was reduced by 24% and 33% respec-tively; the GRT additive improved obviously the seal property of engine cylinder, not only increasing the cylinder pressure nd the output power of engine to rise the acceleration and cold starting properties, but also improving the combustion situation of the fuel oil to decrease the environmental pollution from the exhaust of truck.

结果表明，应用GRT节能油添加剂可以分别节约燃料油5％以上和机油50％以上，达到了八十年代国外同类产品的先进水平；能使东风牌汽车和解放牌汽车的汽缸磨损分别降低24％和33％以上；使用GRT添加剂可以明显地改善发动机汽缸的密封性，不仅提高了汽缸压力和发动机的输出功率，使其具有良好的加速性和冷起动性，而且改善了燃料油的燃烧状况，从而减少了汽车尾气对环境的污染。

The oil-saving agent can be added in fuel oil at low dose with the proportion of 0.005-0.020% and has the functions of combustion supporting, lubrication and carbon deposition removing; road tests show that the oil-saving rate reaches 8%-15%.

该节油剂以较低的剂量0.005-0.020％比例加入燃油中，具有助燃、润滑和清除积碳的作用，行车试验表明节油率达到8％-15％。

At the beginning of 2007, the data of COSCO Shanghai demonstrated that the oil-saving effect on "Yuan He","Teng He" and "Zhen He" vessels reached 22.8%, 6.5% and 8.6% respectively. Given the elements involved such as the improvement of hull surface finish, propeller surface finish, the working condition of the main engine after repair and the relatively small amount of data in the relatively short statistical period, the saving effect of PBCF might be "amplified" at present. Therefore, the Company will keep on tracing and analyzing the data.

在2007年初，根据上海远洋的提供的数据显示，&远河&、&腾河&和&珍河&轮安装PBCF后的节油效果达22.8%、6.5%和8.6%，这中间存在修船后船体表面光洁度、螺旋桨表面光洁度、主机工况的改善的因素，加之统计的周期相对较短，统计的数据相对不多，可能使目前PBCF的节能效果&放大&，因此，有待继续进行跟踪统计分析。

Water saving potential models for five sectors was made, including industrial sector, domestic and public service sectors, reclaimed water use, urban rainwater harvesting and water saving potential resulted from decrease of water pipeline leakage reate.

为了实现&三先三后&，即先节水后调水，先治污后通水，先环保后用水的原则，现分析了南水北调中线主要城市的用水情况、用水性质和特点，建立了节水潜力计算模型，包括工业节水潜力、城镇生活节水潜力、再生水利用潜力、雨水利用潜力和减少管网漏损的潜力。

states the characteristics of the condensing-temperature control in variable condenser water flow of central air-conditioning systems. analyses the effects of variable condenser water flow on cop of centrifugal chillers. indicates that although the negative effect is not negligible, it is less than the positive effect on pump's energy-saving and the condensing-temperature control is helpful to the resulting energy-saving for air-conditioning systems by combining with an example.

摘 要：论述了在集中空调冷却水变流量系统中冷凝温度控制法的特点；分析了冷却水变流量对离心式制冷机性能系数的影响；结合实例说明虽然冷却水变流量对于冷水机组制冷性能的负面影响不可忽略，但这一负面影响较对于水泵节能的正面影响要小，采用冷凝温度控制法对于空调系统综合节能是有益的。

States the characteristics of the condensing-temperature control in variable condenser water flow of central air-conditioning systems. Analyses the effects of variable condenser water flow on COP of centrifugal chillers. Indicates that although the negative effect is not negligibleit is less than the positive effect on pump's energy-saving and the condensing-temperature control is helpful to the resulting energy-saving for air-conditioning systems by combining with an example.

摘 要 论述了在集中空调冷却水变流量系统中冷凝温度控制法的特点；分析了冷却水变流量对离心式制冷机性能系数的影响；结合实例说明虽然冷却水变流量对于冷水机组制冷性能的负面影响不可忽略，但这一负面影响较对于水泵节能的正面影响要小，采用冷凝温度控制法对于空调系统综合节能是有益的。

There had been a moment during the breakfast meeting, though, after the backslapping and the small talk and when all of us were seated, with Vice President Cheney eating his eggs Benedict impassively and Karl Rove at the far end of the table discreetly checking his BlackBerry, that I witnessed a different side of the man.

那次早餐会期间，在表示过关心和寒暄以后，我们所有人坐了下来，我注意观察了一下，副总统切尼面无表情地吃着班尼迪克蛋（Eggs benedict，源自美国，以英式松饼、火腿、水煮蛋以及荷兰酱组合而成），卡尔。罗夫在餐桌的远端谨慎地经常查看他的黑莓手机，我目睹了他所不为人知的一面。

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