查询词典 gorges

As an often used physical model with good theoretical and practical values, StreeterPhelps model has been widely used to study water quality. However, in some special water areas the utilitization of StreeterPhelps model has some limitation as confirming reaeration coefficient often comes from tests in rivers with fast water flow speed with no consideration of wave effects. Furthermore, in practical research in Three Gorges Reservoir, the changing rule of COD appears abnormally. In some water areas far from pollution source, the value of COD changes with time, but does not follow the exponential attenuation rule. This phenomenon can not be explained by former modified StreeterPhelps model.

StreeterPhelps模型是目前进行河流水质研究常用的物理模型，具有良好的理论和实用价值，然而在某些特定水域，该模型的应用受到限制，主要原因是复氧系数的取定多在水流速度较大情况下得到的，而未考虑水面波动对复氧系数的影响，另外，在实际研究过程中发现三峡库区COD变化的规律出现异常：在离排污口相当远的水域，COD随时间变化趋势并不是指数衰减，而是在某个常值附近微小摆动，以往很多修正过的StreeterPhelps模型都无法解释这个现象。

However, in some special water areas the utilitization of StreeterPhelps model has some limitation as confirming reaeration coefficient often comes from tests in rivers with fast water flow speed with no consideration of wave effects. Furthermore, in practical research in Three Gorges Reservoir, the changing rule of COD appears abnormally. In some water areas far from pollution source, the value of COD changes with time, but does not follow the exponential attenuation rule. This phenomenon can not be explained by former modified StreeterPhelps model.

StreeterPhelps模型是目前进行河流水质研究常用的物理模型，具有良好的理论和实用价值，然而在某些特定水域，该模型的应用受到限制，主要原因是复氧系数的取定多在水流速度较大情况下得到的，而未考虑水面波动对复氧系数的影响，另外，在实际研究过程中发现三峡库区COD变化的规律出现异常：在离排污口相当远的水域，COD随时间变化趋势并不是指数衰减，而是在某个常值附近微小摆动，以往很多修正过的StreeterPhelps模型都无法解释这个现象。

With the case study on Wanzhou in the three-gorges reservoir area, it had been studied and analyzed that the potentialities of exploitation and use on land and ecological safety by established land use database, and it had been revealed that serious loss of water and erosion of soil, ecological environment fragility, the water conservancy project submergence a large amount of land, arrannements of the numerous immigrations need a large amount of land, contradictory remarkableness among human and land, and the latent crisis by extensive management land were main crises and questions of the land use.

利用建立的土地利用现状数据库，以三峡库区最大淹没区万州为研究对象，对库区土地开发利用潜力及生态安全性进行了分析和研究。揭示了库区土地资源利用中存在的主要危机是水土流失严重、生态环境脆弱，三峡工程淹没土地多、移民迁建占地比重大、人地矛盾加剧及粗放经营土地带来的安全隐患等问题。

The study result has been used in Wanzhou stretch of the Three Gorges Reservior.

该研究的成果已在长江三峡库区万州段获得了实际应用。

At the center of the water debate is Three Gorges, China's largest and most visible reservoir.

中国水问题的中心话题正是三峡项目，它是中国最大也是最壮观的水库。

Bermudagrass could be a promising species for revegetation of the water-level-fluctuation zone in the Three Gorges Reservoir Area.

从狗牙根对深淹胁迫的生理响应上，证明狗牙根是宜用于三峡水库消落带植被恢复的物种。

After five years, the Three Gorges Project is a very rich harvest of heritage preservation, very important.

这是一种税的变种，但又不是税，比如说我们现在的电费4毛钱，现在加价4厘钱。

The Three Gorges are the tracks of evolution with the river their propelling force. The riverboat is the human body and it's Man's will that strives to move upstream, against the current.

三峡代表了生命进化的轨迹，河水则是动力，江船是人体，而逆流上行的却是人的意志。

Moreover, with the forthcoming sluicing of the reservoir of Three Gorges, such geological hazards in the reservoir area as landslide and rockfall are becoming more and more.

所以从社会减灾防灾意义上讲，从社会属性方面分析地质灾害具有更大的社会经济效益。

Sand table model of the Three Gorges Project.

通过沙盘形象地介绍三峡工程的总体情况。

So it was last week in Selma , alabama.

上星期在亚拉巴马州塞尔马市发生的事件也是这样一个转折点。

The group also spearheads various social programs in China.

该组织还带头参与中国的各种社会活动。