The natural wind changes frequently in forest environment because of topography, terrain, ground surface vegetation and so on.
自然风在森林环境中因受地形、地势和地表植物等因素的共同影响而变化丰富。
In this paper, influence of wind-sand flow on soil wind erosion was discussed using portable wind tunnel to simulate natural wind.
通过在便携式风洞内模拟挟沙气流，研究了风沙流对土壤风蚀的影响。
The two pictures show us that the flower, which is raised in a greenhouse and carefully protected, cannot stand natural wind and rain at all.
这两幅画告诉我们，在温室中养育和精心保护的花朵，根本经不起自然风雨。
The tests of simple wind-tunnel and natural wind erosion show that applying polyacrylamide can improve the wind erosion-resistance performance of sand and reduce the amount of wind erosion of sand.
简易风洞试验和自然风蚀试验表明，施用聚丙烯酰胺可以改善沙土抗风蚀能力，减少土壤风蚀量。
It analyzes the influence of natural wind pressure and diagonal branches to ventilation network.
分析了自然风压和角联分支对通风网络的影响。
Similarly, the method of calculation natural wind for long road tunnel is also applicable to long railway tunnel.
同样的，该特长公路隧道自然风计算方法还适用于特长铁路隧道。
The relationship between the wind pressure distribution on the outside of tall building and the natural wind velocity.
高层建筑外表面风压分布与自然风速的关系。
The horizontal and vertical coherences of the fluctuating wind pressures on the models are stronger than that of the natural wind.
脉动风压的水平和竖向相干性均高于风速的相干性。
As known from the calculation, the natural wind speed of each section in both Niba Mountain Tunnel and Guanjiao Tunnel vary widely.
通过计算可知，泥巴山隧道及关角隧道主隧道各区段内自然风速均差异很大。
The utility model relates to a natural wind induced type skylight for the top part of a path for air ventilation and smoke ventilation.
本实用新型涉及通风、通烟通道顶部的自然风诱导式天窗。
It is able to create the natural wind inside the atrium. So there are many possibilities in the construction and realization of the project.
而对于这个项目本身的建设实施，也同样存在各种各样的可能性。
The influences of natural wind speed distribution and train running speed on the aerodynamic characteristics of the maglev train under crosswinds are probed in details.
深入探讨了自然风速分布和列车运行速度对磁悬浮列车横风气动力特性的影响。
When natural wind is weak, the wind helping machine can be started to increase wind speed, so as to ensure that electricity producing quantity of the generator is stable.
若自然风弱，可开启助风机加强风速，以保障发电机产电量的稳定。
Finally, natural wind speed frequency distribution and the extreme wind speed in each section have been got by statistically processing of the routine calculation results.
最后，将编程计算结果进行统计处理，得到各区段的自然风风速频率分布以及风速极值。
With the increase of extra-long tunnel construction, obviously, the empirical value can not keep up with the actual. So it needs to work out a method for natural wind computation.
随着特长隧道建设工程的增多，经验取值显然与实际不符，有必要建立一套隧道内自然风计算方法。
Simulation results with natural wind model indicate the wind generation capturing ability improvement of the novel strategy, during the operating field that below rated wind velocity.
模拟自然风速激励下的仿真结果表明，新方案提高了机组低风速运行区域风能捕获能力。
Natural wind especially the crosswind has serious effect on the safety and economic operation of direct air-cooled units.
自然风特别是横向风对直接空冷机组的安全、经济运行有着重要的影响。
Natural wind especially the crosswind has serious effect on the safety and economic operation of direct air-cooled units.
自然风特别是横向风对直接空冷机组的安全、经济运行有着重要的影响。
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