泥沙密度是河流泥沙的主要物理特性之一。
Sediment density is one of main physical characteristics of river sediment.
小流域综合治理，是控制河流泥沙的根本措施。
The comprehensive harnessing of small watershed is a fundamental measure of controlling the river silt carrying capacity.
河流泥沙调查，对于水土保持工作有很重要的现实意义。
The sediment investigation is of great importance for soil and water conservation.
本文系统的分析研究了长江上游地面侵蚀和河流泥沙两个系统。
The surface erosion and fluvial silt in upper reaches of Changjiang River were analyzed systematically.
而区域观测法又可分为河流泥沙观测法、地貌研究法和土壤学方法；
Regional measurement method includes sediment measurement of rivers, geomorphologic analysis and pedological analysis.
冲沟侵蚀是我国长江上游地区最重要的侵蚀过程，是河流泥沙的主要来源。
Gully erosion, extensively distributed and intensively developed in the Upper Yangtze River Basin, is the major sediment source of the Yangtze River.
同时，渤海年复一年地接受河流泥沙的沉积，沉积的结果又使得渤海逐渐变浅。
In the meantime, the Bohai Sea year answer the deposit that one year the ground accepts fluvial silt, deposit result makes again the Bohai Sea becomes shallow gradually.
沉沙池设计应根据河流泥沙情况及枢纽运行条件，提出合理的运行设计和原型观测设计。
For the design of desilting basin, the reasonable operation and prototype observation design should be offered according to the river sediment situation and pivot operation condition.
河流泥沙是流域内各种自然因素和人为因素综合作用的反应，与河道本身冲淤变化密切相关。
River sediment yield is the reaction of various natural factors and human action factor comprehensive role in basin, wash with sedimentation of river course to change, is related closely.
北洛河流域人类活动对河流泥沙影响较为突出的项目有毁林开荒、陡坡开荒、修路、开矿等。
The main human activities significantly influencing the river sediment in the Beiluo river basin are opening up wasteland on steep slopes and forest areas, road construction, mining, and so on.
沙波运动是冲积河流泥沙运动的一种重要形式。沙波的消长对河道水流的阻力损失有很大的影响。
Sand wave movement is an important form of sediment movement for alluvial rivers and has a great effect on stream resistance.
土壤侵蚀是引起土地退化和河流泥沙淤积的根源，其产生与各种自然因素和人类活动存在一定关系。
Soil erosion can result in land degradation and sediment deposition of a river, where soil erosion is connected with some natural factors and human activities.
开发了CRS - 1卵石河流泥沙数值模型，经水槽试验、模型试验、野外实测资料验证，计算结果与实测值吻合良好。
A river sediment numerical model for gravel-pebble streams, CRS-1 model, is developed. The computed results by the model agree quite well with the data of flume experiment, model experiment and field.
在携带大量粗泥沙的湍急河流流经的任何地方，都能找到它们。
They are found wherever fast rivers carrying loads of coarse sediment once flowed.
河流中泥沙的堆积将是一个由大坝修建所产生的，能抵消所有正面影响的巨大威胁。
River sediment is a major threat that could undo all the positive effects the dam is supposed to bring.
在哥斯达黎加和墨西哥，环境市场让用水户补偿上游林地所有者，以减少河流中的泥沙淤积。
In Costa Rica and Mexico, these markets let water users compensate upstream forest owners for reducing sediments in rivers.
在河流下游，由于流速变缓，泥沙(等沉淀物)自然而然地堆积在河床中，曾经造成黄河经常改道。
In the lower reaches, where the current slows, the natural accumulation of sediment in the riverbed has caused the river to change course often in the past.
相较于积蓄雪水的北方国家大坝而言，雨季中满是泥沙的河流使大坝的沉积更为严重，。
Seasonal rains produce muddy rivers, with higher sedimentation than northern countries’ dams filled with melted snow.
本文首先回顾了前人在河流悬移质泥沙模型相似律方面取得的大量研究成果。
This thesis reviewed at first the existing research results of the law of similarity for river models carrying sediment.
树木所起的作用不止于保持水土。树木还吸收水份、防止洪水突发，并使河流不至于含有可杀死鱼类的泥沙沉淀。
Trees do more than keep the soil in place. They also soak up water and prevent flash floods, and keep rivers clear of sediment that can kill fish.
此期间，河流带入湖泊的泥沙少，洪湖拥有一个开阔、稳定、浮游生物较多的淡水湖泊环境。
The Honghu lake had a open, stable environment enriched in plankton diatoms, with less sediment from the river during this period.
本文概要地叙述了泥沙在河流三度空间里这四个方面的变化。
The variations of the four aspects of sediment in the tridimensional space of the river are described briefly.
认为平原细沙河流的泥沙模型设计所遵循的相似准则应包括水流运动相似、推移质运动相似和悬移质运动相似。
The similarity criteria for designing the sediment models for plain sand-bed rivers include similarity of flow, bed load and suspended load.
水力机械的磨蚀是我国多泥沙河流上运行的机组长期以来面临的疑难问题。
Abrasion of hydraulic machinery is a knotty problem faced by hydraulic machinery operated in silt laden river in our country.
水力机械的磨蚀是我国多泥沙河流上运行的机组长期以来面临的疑难问题。
Abrasion of hydraulic machinery is a knotty problem faced by hydraulic machinery operated in silt laden river in our country.
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