sand course是什么意思

网络释义

用法例句

So it can enable the pedestrian inclined shaft successfully pass through the quicksand layer,and it has certain instructive significance .

在西峪煤矿人行斜井穿越流沙层期间,通过采用超前小导管管棚预支护、周边开挖、放小炮、拱架初期支护、料石砌碹、壁后注浆二次衬砌等技术措施,可以减小对围岩的扰动,使人行斜井成功穿越流沙层,这对井巷工程施工具有一定的指导意义。

Simulating test on damage regularities of thick sandy soil layer and load distribution on key roof block in shallow coal seams;

浅埋煤层厚沙土层顶板关键块动态载荷分布规律

Studies on load-transmitting factor of thick sandy soil layer on key roof stratum in shallow seam mining;

厚沙土层在顶板关键层上的载荷传递因子研究

Based on the measurement in site, the phenomenon of load reducing on roof key blocks structure under thick sandy soil layer was discovered.

基于现场实测发现的采动厚沙土层载荷传递现象,应用开发的动态载荷相似模拟系统,得出了厚沙土层采动破坏特征、工作面顶板关键层全结构的载荷总体分布规律以及顶板结构中A,B和C关键块的动态载荷传递规律;发现了周期来压期间二次"卸荷拱"现象,揭示了关键块载荷小于载荷层全厚载荷的机理;提出了载荷传递因子的概念,给出了卸荷拱高度的计算公式和载荷传递因子的计算公式,解决了关键块上的载荷计算问题。

It was the tip of a saddle protruding from beneath a sand drift.

这是从流沙层里露出来的马鞍的尖部。

Jet grouting curtain supporting technology for shaft heading face through quicksand layers with confined water

立井工作面承压水流沙层保浆旋喷注浆帷幕支护技术

His daughter, who tagged behind him with the bucket of water and the rations, sometimes helped him to pull his feet out of the soft sand.

沙柳背着水壶干粮等物，寸步不离地跟在父亲后边，有时搀着他把脚从软软的流沙层里拔出来。

Influence of dry sand bed thickness on soil moisture evaporation in mobile dune;

流动沙丘干沙层厚度对土壤水分蒸发的影响

rainwater washes topsoil into rivers and sands,

雨水把表层土壤冲进河流和沙地，

Stability Characteristics of Laminar Flow on Sand Ripples in Open Channel;

沙纹床面明渠层流稳定性特征的研究

The mechanics of sediment transport under raindrops impacting shallow overland flow

雨滴击溅下薄层水流的输沙机理研究

A COMPUTATION ON INTERMEDIATE AND DEEP LEVELS SEA CURRENTS IN NANSHA ISLANDS AREA IN WINTER AND SUMMER

南沙群岛海区冬夏季中、深层海流的计算

Log Identification of Beach-bar Sandbodies Reservoir and Fluid of No.4 of Shahejie Formation in Dongying Rift Lacustrine Basin

东营沙四段滩坝砂储层及流体测井识别方法

Influence of Particle Characteristics of Sedimentary Layer on Fluidization Characteristics Based on Spraying Jet Type Sand Collector

基于喷射流泥沙采集器的沉积层粒子特性对流化特性的影响

Basic equation for variation of bed material composition in active layer of alluvial river

冲积河流混合活动层内床沙级配变化的动力学基本方程

The Speciation of Phosphorus in Sediments of the Yellow River and Its Main Inflow Sands;

黄河干流表层沉积物及主要入河沙漠颗粒物中磷形态研究

Observational Study of Turbulence Characteristics of Surface Layer over Hinterland of Taklimakan Desert;

塔克拉玛干沙漠腹地近地层湍流特征的观测研究

Distribution of Surface Suspended Sediment and Characteristics of Estuarine Front in the Changjiang Estuary Area after the River Closure at Three Gorge

三峡工程截流后长江口海区表层悬沙分布与河口锋带特征

Basing on the theory of similarity, the similarity law of model for homogeneous hyperconcentrated sediment flow in laminar regime in open channel has been studied and the expression of scale for similarity has been derived.

本文研究了明渠均质高含沙水流在层流区的模型律,导出了模型相似比尺表达式。

And distinctive layered patterns in the fossilized sediments indicated that the water that deposited them was no longer flowing north; instead it flowed eastward.

而化石沉积物中特有的层状构造，则显示沉积泥沙的水流不再往北，而改向东流。

a bed of clay, limestone, sand, etc

一层黏土、 石灰石、 沙子等.

There is practically no plant cover on the deserts.

沙漠实际上没有植物层。