Then , an empty-car service-space network is created and multi-stage optimization model of empty car distribution un.

Note scope of Lanzhou Railways Bureau since 1995.

注:自1995年起,复线里程、自动闭塞里程为兰州铁路局全路局数.

The goods have been delivered into the custody of the railway.

货物已送交铁路局保管.

Study of Technique Management of Step Pumping Stationsin South to North Water Transfer Project.

南水北调梯级泵站技术管理研究.

The electricity-consumption to pump water is great in the Route Project of the South-to-North Water Diversion.

南水北调东线一期工程抽水用电量大,研究东线工程利用峰谷电价减少工程运行电费具有积极意义.

The South North Water Transfer Project has come to the substantial preparatory stage.

备受人们关注的南水北调工程已进入实质性筹备阶段.

In areathe Middle Route Scheme of South-North Water Diversion Project, water quality is originally good.

南水北调中线工程水源区产生优良水质的基础是牢固的.

The paper discussed relationship between Hanzhong forest ecological construction and the project of south-to-north water diversion.

南水北调工程的实施将缓解河北省 长期 缺水的严重局面,对其生态环境产生显著影响.

The Danjiangkou reservoir is source area of the middle route project of S-N water transfer.

丹江口水库为南水北调中线工程水源地.

Water Diversion Project ( East Route )

南水北调 ( 东线 )

The potential problem of secondary pollution due to the decompo.

文中还探讨了修复过程中可能存在的二次污染问题.

There are two major types of air pollutants.

总共分两个类型的环境污染:一次污染,二次污染.

The purity Au reclaimed by multi-complex electrolyte can, and it not pollute the environment.

其中利用多元络合物电解法对于黄金的回收,其纯度可以达到99.5%, 而且不会对环境造成二次污染.

Controlling environment pollution by biotechnology has the advantages of low cost and no secondary pollution.

应用生物技术治理环境污染,具有费用低、不产生二次污染的优点.

With high total usage and no secondary pollution, its oil recovery ratio reaches 90 %.

该工艺综合利用率高,无二次污染,油的回收率可达90%,适合于小规模废乳化油的净化 、 再生.

The method has features of convenient operation, no secondary pollution, safety security and high adaptability.

具有操作方便 、 无二次污染 、 安全可靠及适用性强等特点.

For the house-hold water storage , the main factor is secondary pollution on water stored.

而在家庭储水方面, 主要是存在二次污染的风险.

In the transport process, bad structure is easy to result in secondary pollution.

运输过程中, 不良机构容易造成二次污染.

Control of the secondary pollution.

控制二次污染.

Artificial secondary package is cost consumable and easy to create secondary contamination.

人工二次套装费用高,极易形成二次污染.

And tap water has pollution 2 times, unfavorable and immediate entry.

而且自来水有二次污染, 不宜直接入口.