Sediment density is one of main physical characteristics of river sediment.
泥沙密度是河流泥沙的主要物理特性之一。
Acid-volatile sulfide in river sediment sample was measured by reaction headspace .
采用顶空色谱测定了河流底泥中的可酸挥发硫化物。
The variation of river sediment load is considerably affected by rainfall and underlying surface.
河流输沙量的变化受流域降水和下垫面影响很大。
REE composition in the Yangtze river sediment is different from that in the Yellow river sediment.
长江与黄河沉积物的稀土元素(REE)组成特征不同。
Mining has led to water polluted by mercury, which miners use to separate the metal from river sediment.
但开采者常用来从河沙中分离黄金的水银也导致了河水的污染。
A conceptual formulation for gullies was obtained by simplifying the Bagnold's function of river sediment discharge.
把拜格诺的河道水流悬移质泥沙公式简化为简单概念的沟道产沙公式。
The Yellow river sediment has similar REE composition to the upper continental crust(UCC), so it can also be used to trace the UC composition.
相对长江沉积物而言，黄河沉积物REE 分布模式与上陆壳的更为相近，可用来示踪上陆壳平均组成。
Its main work includes the Yellow river sediment cross-section tests, river bed surface quality sampling and particle size distribution analysis and so on.
其主要工作内容包括黄河河道断面淤积测验，河道表层河床质取样及颗粒级配分析等工作。
Periodical analysis showed that abrupt change of sediment load happened in 1968 and 1984, which divided the variation process of river sediment load into three stages.
中国主要河流入海泥沙还具有明显的三个阶段变化特征，即分别在1968年和1984年前后发生了突变。
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.
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。
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.
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。
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.
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。
This paper describes the characteristics of fractal structure of bridging flocculated aggregates by using settling technique integrating with SEM photographs of Yellow-River sediment flocs.
本文采用沉降技术并结合黄河泥沙架桥絮凝体的电镜照片，对絮体分形特征进行了研究。
This paper describes the characteristics of fractal structure of bridging flocculated aggregates by using settling technique integrating with SEM photographs of Yellow-River sediment flocs.
本文采用沉降技术并结合黄河泥沙架桥絮凝体的电镜照片，对絮体分形特征进行了研究。
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