查询词典 sheet erosion

In addition, with the progress of runoff scouring, the form of soil erosion changed from sheet erosion to rill erosion.

李勇等(1991)和李勇(1995)通过对黄土高原地区乔灌植被根系与土壤物理性质关系的研究，证

Rare earth element tracer method was used to study sheet erosion changing to rill erosion on slope land.

中国科学院水利部水土保持研究所黄土高原土壤侵蚀与旱地农业国家重点实验室，陕西杨凌712100

In this paper, a new REE tracer method was used to quantitatively distinguish sheet and rill erosion amount. The new REE tracer method should be useful to future studying of erosion processes on slope lands.

本研究为定量区分片蚀和细沟侵蚀量以及坡面侵蚀过程中片蚀向细沟侵的转变以细胞侵蚀发生、发育提供了新的思路和解决途径。

Under the effect of motive force of sheet now, erosion amount increases with the slope gradient as power function; under the co-effect of spitshment and flow, erosion amount...

在薄层水流动力的作用下，侵蚀量随地表坡度增加呈幂函数增大；在击溅和水流共同作用下，侵蚀量与地表坡度呈二次抛物线型关系。

It shows that runoff is closely correlated with the features of individual precipitation, and it is also affected by vegetation within a short period of time. Raindrop erosion, sheet flow erosion and rill erosion on the slope are the main soil erosion patterns; sediment yield occurs mainly in flood season. Human activity and individual precipitation are two important factors that control the soil erosion at a small watershed. Comprehensive management on the slope in a small watershed is an efficient measure of water and soil conservation.

分析表明，小流域的产流方式容易随次降雨条件的变化而变化，植被因素在较小时间尺度内就会影响产流；产沙主要来源于坡面上的溅蚀、片蚀和细沟侵蚀，时间主要集中在汛期；人类活动以及次降雨条件是控制小流域侵蚀产沙的重要因素；在小流域内进行坡面的综合治理是水土保持的有效措施。

Based on the problems of the change of erosion types on the slope, we used a new REE tracer method, by placing different rare earth elements of different soil depth across a slope in an indoor plot, simulated rainfall and INAA were applied to study sheet erosion changing to rill erosion on slope land.

提出并建立了一种新的利用REE元素研究坡面土壤侵蚀的方法根据坡面不同侵蚀方式演变过程定量分析存在问题，提出并建立了人为沿坡面垂直分层布设不同的REE示踪元素，利用室内人工模拟降雨试验和中子活化分析相结合的方法研究坡面侵蚀演变过程。

Soil erosion is widespread in the future should be strengthen the protection of grassland, afforestation, reduce the role of gully erosion and sheet erosion; should also note that the full utilization of water resources in the development of irrigated land, and substantial improvements in agricultural irrigation and drainage facilities to prevent flooding disasters.

水土流失现象普遍，今后应加强保护草坡，植树造林，减少沟蚀和片蚀作用；亦应注意水利资源的充分利用，发展水浇地，并大力改善农田排灌设施，防止水患灾害。

Number of employees: 300 person international certification standards: ISO14000 UL 6 laminates or below the fastest delivery time in the day; the shortest time with the customers at competitive market environment has won valuable time; major equipment: computer Drilling Units 6 hole machine, 2 Units MLB Lamination Machine \ computer programming machines, automatic plating line, horizontal two-sided sheet erosion machine, horizontal double-sided grinding machine, exposure machine, computer Gerber machine, double-sided imaging machine, UV machine, computer tester, punch and wastewater treatment systems.

职工人数： 300人国际认证标准：ISO14000 UL 6层板或以下最快可在一天时间交货；以最快的时间配合客户在激烈的市场环境赢得了宝贵的时间；主要设备：6台电脑钻孔机、 2台多层板压合机\ 电脑编程机、自动电镀线、水平式双面蚀板机、水平式双面磨板机、曝光机、电脑光绘机、双面显影机、紫外线机、电脑测试机、冲床和废水处理系统。

According to the result of artificial rainfall, the character and factors affectedby soil, rainfall, chemicals, slope length, slope gradient and field mangment practices, for rainfall, runoff,infiltration, soil erosion and soil chemicals, such as NO_3~-, NH_4~+, PO_4~(3-), K~+ and Br~-, are investigated. Thedeterminate methods, influence factors and practical application of the mixing zone depth are also researched.The results can enrich the dynamics of soil, water and nutrient transport, evaluate the soil water and fertilizerefficiency, and theoretically benefit the research of agricultural NSP on loess hill slope. 1. According to the surface transport experiments of soil chemicals under the non-satuation soil and watererosion condiction, for adsorbed PO_4~(3-) and K~+, the time of sheet erosion and rill erosion initiation is coincidentthat of chemicals content in surface runoff climbs, and then their abundant export by surface runoff is urged.

本文以黄土坡地为研究对象，通过模拟降雨试验，研究土壤因素、降雨因素、化学物质理化性质、坡长坡度因素和农田管理措施等对坡地降雨—产流—入渗—土壤侵蚀—农田NO_3~-、NH_4~+、PO_4~(3-)、K~+和Br~-地表迁移的影响，研究非饱和土壤和水蚀条件下混合层深度的确定、影响因素和模拟，探讨其在黄土坡地的实际应用，为丰富坡地水分养分迁移动力学、提高旱地土壤水分养分利用率和深化农田非点源污染研究提供理论依据。

This project includes the followings: high precision aluminum belt, coating aluminum foil, large shape aluminum, pipe of aluminum and its alloy, aluminum gear, aluminum heat radiator, compound aluminum pipes, colored coating aluminum sheet, aluminum building wall, high quality electrolysis aluminum foil, special shape aluminum, canned aluminum materials, PS plank, aluminum foil for air conditioner, aviation aluminum sheet, cold treated aluminum sheet, aluminum decoration sheet, plastic aluminum pipe, erosion materials, food package materials and so on.

三、项目简介：铝加工发展项目包括：高精度铝板带；子铝箔；亲水铝箔；大型铝型材；涂层铝材；铝及铝合金铸轧带材铝合金管；铝合金轮；铝散热器；铝塑复合管；彩色涂层铝板；铝幕墙板；高性能电解铝容箔；铝合金特种型材；易拉罐料； PS 板；空调箔；航空用铝板；冷轧铝板、带、箔；建筑装饰用铝板；铝塑管；铝建筑，耐腐蚀材料和食品包装材料。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失