查询词典 water conservation

Because the concrete construction, itself distorts with the restraint and so on a series of questions, caused the concretes crack to become projects and so on construction, water conservation, bridge, tunnel most common project plant disease.

由于混凝土施工、本身变形和约束等一系列问题，使混凝土裂缝成了土木、水利、桥梁、隧道等工程中最常见的工程病害。

At the same time, Sha Town or municipal water conservation areas and provincial nature reserves in May 2008 was named City's forest ecological demonstration town.

同时，沙溪镇还是市级水资源保护区和省级自然保护区，2008年5月被评为市森林生态示范镇。

The main contents are as follows:Firstly, starting with the general situation of soil erosion and the harms caused by it, the causes leading to the local soil erosion problem are analyzed comprehensively in the paper. And connecting with the measures taking place, sticking points towards the career of soil and water conservation are expatiated upon.Secondly, Back-Propagation Neural Network, One of Artificial Neural Network is used to set up a modal about the connection of the soil erosion modulus and seven factors impacts on it, such as, rainfall, rainfall largest intensity in 30 minutes, runoff coefficient, vegetation cover percent, rate of granule, rate of physical viscidity-clay, the rate of organic matter. Through the comparison with linear regression model, the second regression model, the Chinese Soil Loss Equation, it illustrated that BP Neural Network modal is more accurate than the other three modals in forecasting the mount of soil erosion, and the BP Neural Network will have some applicability in forecasting in soil erosion.

本文以霍山县作为皖西大别山区的典型区域，主要研究了以下内容：(1)从介绍霍山县土壤侵蚀状况以及所造成的危害入手，全面分析了导致当地土壤侵蚀发生的原因，并结合当地采取的水土保持相关措施，阐述了当地水土保持工作的症结所在；(2)结合上土市水土保持试验站多年实测资料和2005年实验资料，应用BP神经网络理论，建立了次降雨土壤侵蚀量与次降雨量、最大30min雨强、径流系数、植被覆盖度等因子之间关系的模型，并通过BP神经网络的预测模型与一次回归模型、二次回归模型、CSLE模型之间的对比分析，说明了建立的BP神经网络模型在土壤侵蚀预测可以取得较回归模型和CSLE模型更高的精度，也说明了BP神经网络理论在土壤侵蚀预报中具有一定的适用性。

Ecological restoration and soil and water conservation of spoil ground slope are the key projects of environmental protection in expressway construction.

高速公路弃土场边坡的生态恢复与水土保持是公路建设环境保护的重要内容。

The survey and management of Landslides is the important field in the catchment management, soil water conservation and hazard protection.

崩塌地的调查与管理是集水区、山坡地水土保持及灾害防治的重要课题，同时也是卫星遥测影像可利用的一个方向。

The paper puts forward corresponding measures for soil and water conservation.

对此提出了相应的水土保持措施。

In China sci-tech development of soil and water conservation has a long history for about 100 years.

经过近百年的发展，具有中国特色的水土保持科学体系已经基本形成。

This is helpful to advance the research content of the field of soil and water conservation science.

这有望进一步推进中国水土保持学科领域的研究内容。

It has some meaning to take example by other designs of soil and water conservation sch...

对其它引水工程水土保持方案的设计有一定的借鉴意义

In this thesis, I generalized and analyzed, from questionnaires and some cases author experienced, some difficulties and problems one may be confronted with during the reviews and enforcements of soil and water conservation plans to serve as references for professional engineers and all other people involved, so that same mistakes will not be made again.

本研究主要藉现场实际例子，将其所发生之问题纪录，予以统整、分类、分析提出解决之道以及建议，以便提供专业技师与相关从业人员参考，避免再犯相同的错误，藉此提升水土保持计画与工程之水平、品质，以及效率，以使整个水土保持计画监督检查管理部份更臻成熟完善。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。