gravel bed
英 [ˈɡrævl bed]
美 [ˈɡrævl bed]
网络 碎石床
双语例句
- Determination of Bed Load Transport Rate of Gravel Bed by Simulation of Flume Experiment
用水槽模拟试验求卵石河床推移质输沙率 - A Mathematical Model for Change of Gravel Bed River after a Long-term Clear Water Scouring
卵石夹沙河床长期清水冲刷的数学模型 - A dynamic pilot system was built to estimate oil-pollutant removal efficiencies using three kinds of media ( slag, gravel and lake bottom sediment) and the slag bed behaved best.
动态吸附试验表明，各种填料床对石油类的去除效果为炉渣床＞砾石床＞湖泊底泥床； - The prospector panned off bits of a sand and gravel scooped from the bed of a stream.
探矿者淘选从河床里挖出的少量含金泥沙和砂砾。 - Gravel motion shows intermittence, i.e. after traveling a short distance, gravel is at rest on the bed for a long time and its velocity is low.
卵石运动的间歇性表现为运动距离短，停歇时间长，平均运动速度低。 - Gravel Bed load Particle Size Distribution along the Three Gorges Channel of Yangtze River
长江三峡卵石推移质粒径沿程分布 - Then, dispersal gold placer within the intermediate store body was enriched in gravel bed of detention in river bed after many times intermittent elevation, and the gold placer deposit was formed.
当地壳多次间歇性上升后，使砂金中间储存体中分散的砂金集中富集在河床滞留砾石层中，从而形成砂金矿床。 - Textural and structural features of Pleistocene gravel bed in Beijing with special reference to their origin
北京西郊第四纪砾石层的结构&构造特征及其成因的探讨 - Because of permeate coefficient changing heavy and permeate passway uneven in sand stratum and gravel bed, there are many problems during grouting, such as boring hole difficulty, spreading radius and grouting effect widely different etc.
由于砂砾石层存在渗透系数变化大、渗透通道不均匀等特点，灌浆过程中常出现成孔困难、灌浆效果差异大、浆液扩散方式及扩散半径差异大等问题。 - For the frozen weathered bedrock, sandy gravel and pebble bed, it is more suitable to use drilling and blasting method than to use the frozen soil excavator.
对冻结风化基岩、砂砾层或卵石层，冻土挖掘机效率低，宜采用钻眼爆破法，采用抓岩机装载冻土。 - The Impact of Scale Distortion on the Similarity of Gravel Bed Load Transport on Gradient River Bed in a Physical Model Study
河工模型几何变态对坡面上推移质输移相似性的影响 - Bed load transport rate is an important problem in the development of rivers of gravel bed.
不均匀级配的卵石河床的推移质输沙率是生产中的一个重要课题。 - Characteristics of channel profile and its impact on low flow water level in the gravel/ sand bed reach downstream the Three Georges Project
三峡下游沙卵石河段纵剖面形态对枯水位影响 - In the meanwhile, the result also show that the section configuration and near watercourse characteristic has influenced gravel bed load transport rate.
河床断面形态及其相邻河道特性对输沙率也有较大的影响。 - This paper expounds the key parts of the construction technique and quality control according to the compress construction of grit and gravel mat and sand foundation on the lining channel bed.
本文通过新疆沙漠渠道衬砌渠床砂砾石料垫层和其下砂基的压实施工案例，详细叙述了渠床砂砾石料垫层和砂基水平同起碾压特殊有效的施工工艺及质量控制关键点。 - Whether the natural sand gravel stratum in the river bed would serve as the foundation of the superhigh faced rockfill dam or not was one of the key technical problems of the project.
河床天然砂卵砾石层能否作为超高面板坝坝基是该工程的关键技术问题之一。 - Discovery of gravel bed in the fourth terrace of zhoukoudian, Beijing and its significance
北京周口店地区Ⅳ阶地砾石层的发现及其意义 - The vertical distributions of mean velocity and suspended sediment concentration in gravel-bed rivers
卵石河流的时均流速和悬沙浓度垂线分布 - Practice of replacing gravel with earthwork cloth in filter bed
土工布代替砂砾反滤层的实践 - The Upstream Yangtze River belongs to erosive, degraded reach, with cobble, gravel and coarse sand as its bed forming materials.
长江上游属于浸蚀而减坡的河段，其河床组成质料为砾卵石和粗沙。 - Modeling Method of Bed Load Transport Rate in Rivers with Gravel and Cobble Bed
卵砾石河流推移质输沙率的模拟计算方法 - Quantity of gravel bed load of the upper Changjiang River
长江上游卵石推移质数量的计算 - The characteristics and formation environment of coastal gravel bed of South Shandong coast
鲁南沿海海岸砾石层的特征及其形成环境 - The results show that the aerodynamic roughness length of gravel bed is a function of gravel size, coverage, free velocity, friction velocity and the atmospheric stratification stability;
得出以下结论：戈壁风蚀面上空气动力学粗糙度长度与砾石粒径、高度、覆盖度、自由风速、摩擦速度以及大气层结稳定度有关； - Critical Condition for Starting Motion of Gravel Study on the Kinetic Condition of Granulation in Fluidized Bed
砾卵石起动临界条件结团造粒流化床中造粒动力条件研究 - A Survey of Destruction by Grinding and Striking of Gravel Bed Load on Hydraulic Structures
关于卵石推移质对闸、坝的磨损与撞击破坏的调查 - In Chengde area, water table is shallow, gravel bed is the main aquiferous layer and its penetrability coefficient is comparatively large, settlement radius caused by dewatering is large as well.
承德地区地下水位较浅，含水层主要为圆砾层，并且渗透系数较大，基坑降水引起的地面沉降半径也较大。 - Multiple plants/ gravel bed system was recommended for the removal targeted at SS and COD, and reed/ multiple substrates bed system was recommended for nutrient removal.
如以去除悬浮物和有机物为目标，推荐采用多植物砾石系统。如以去除营养元素为目标，推荐采用芦苇组合填料系统。