1) electric field
风沙电场
1.
Based on the electric field of a point charge by Coulomb s law, we developed a general theoretical model for describing the coupled interactions among wind velocity, sand movement and the electric field.
基于点电荷电场的基本理论,建立了风场-沙粒运动-风沙电场(风-沙-电)相互作用的多场耦合理论模型,给出了风沙电场沿高度的分布规律,即:风沙电场在近地层一般为正电场,电场强度随高度的增加而迅速下降;在10-20cm附近风沙电场由正电场变为负电场;随后,风沙电场强度的绝对值随高度的增加由小变大,在达到某一极值后,电场强度的绝对值随高度减小,最后趋于晴天电场。
2) sandstorm
风沙
1.
Risk Assessment of Sandstorm Harzard and Security Pattern of Combat Wind Erosion;
风沙灾害危险性评价及防沙治沙安全格局构建研究
2.
There were rich sand resources in the areas of Gongga airport of Tibet,which resulted in the sandstorm from January to May every year and had serious influences of airplane takeoff and touchdown,and yield and living of local people.
经实地调查和气象、水文资料的收集,以及对沙漠化影响因子相关性分析,提出机场周边地区土地沙化和风沙灾害的成因是自然因素和人为因素综合作用的结果,人为因素中的耕地面积、土地垦殖率因子和自然因素中的大风日数因子是风沙灾害形成的主导因子。
3) Blown sand
风沙
1.
Blown sand is very common in nature.
在野外风洞条件下 ,就不同风况的风沙胁迫对几种固沙植物生态生理特征的影响进行了实验研究。
2.
Most of the sand raising, transport and sediment of blown sand occur in this atmospheric layer.
风沙问题日益严重 ,以大气边界层内风沙活动特征及其相互反馈耦合作用为主要内容的大气边界层动力学显得愈来愈重要。
4) sand
风沙
1.
Research on sand disaster in the two county——Kangping and Faku;
沈阳市康平、法库两县风沙灾害与治理研究
5) sandstorm source
风沙源
1.
The paper also introduces the scope,tasks,approaches,and goals of sandstorm source control project in .
同时文章介绍了京津风沙源治理工程的范围、任务、方式和目标 ,并指出完全依靠打 2 8 6 4万眼井 ,长期超采地下水来维持林草植被生长 ,一旦引起地面下沉 ,会永远失去地下水库。
6) wind-blown sand
风沙流
1.
Stochastic sand trajectories in wind-blown sand were obtained by solving the differential equation which describes the vertical fluctuating velocity of sand grains.
通过对描述沙粒垂向运动速度脉动分量的随机微分方程的直接求解,获得了风沙流中沙粒运动的随机轨迹。
2.
Through simulations on abated effect of nylon and plastic nets with different structure on wind-blown sand in wind tunnel, the aim of this paper is to provide a theoretic base for optimized design of blown sand engineering in the field and a new sand-defending material application.
通过不同结构的尼龙网和塑料网对风沙流减弱作用的风洞实验研究,旨在为探求各种防沙新材料的防护功能,并为防沙新材料的开发、野外工程防沙的优化设计及其应用提供理论依据。
3.
Though simulations on abated effect of nylon net with different porosities on wind-blown sand in wind tunnel, the aim of this paper is to research the relationship between sand transporting and nylon net porosity and wind velocity.
通过对不同孔隙度尼龙网对风沙流减弱作用的风洞模拟实验,旨在探求输沙量与孔隙度和风速二者之间的关系,从而为防沙新材料的开发、野外工程防沙的优化设计及其应用提供理论依据。
参考词条
补充资料:长风沙
【诗文】:
江水六月无津涯,惊涛骇浪高吹花。
橹声已出雁翅浦,荻夹喜入长风沙。
长风自古三巴路,樯竿参差杂烟树。
南船北船各万里,凄凉小市相依住。
歌呼杂沓灯火明,黄昏风死浪亦平。
劳苦舟师剩沽酒,安稳明朝到池口。
【注释】:
【出处】:
江水六月无津涯,惊涛骇浪高吹花。
橹声已出雁翅浦,荻夹喜入长风沙。
长风自古三巴路,樯竿参差杂烟树。
南船北船各万里,凄凉小市相依住。
歌呼杂沓灯火明,黄昏风死浪亦平。
劳苦舟师剩沽酒,安稳明朝到池口。
【注释】:
【出处】:
说明:补充资料仅用于学习参考,请勿用于其它任何用途。