沙粒被吹至缓坡，沿沙丘陡峭的背风面滑落。
Sand is blown up the gentle slopes and falls down the steep lee side of the dunes.
风压，迎风面，背风面，上风，静压，动压，全压，热压。
Wind pressure, against the wind, leeward, windward, static pressure, dynamic pressure, overall pressure, thermal pressure.
所述箱体的背风面至少具有一个带有出气单向阀的出气口。
A leeward side of the box is provided with at least one air outlet having a vent check valve.
研究结果表明：换热管翅片迎风面换热效果明显高于背风面；
The simulation result shows: the windward of pipe have a better heat exchange effect than the leeward;
本文使用数值模拟方法研究了活动翼面对翼型背风面分离的控制作用。
In this paper, separation control on Joukowsky airfoil having leading edge rotational cylinder is investigated by numerical simulation method.
对于楼之间空间较小的街谷，背风面和迎风面的示踪剂浓度平均比值可达8。
The ratio of mean tracer concentrations on leeward side to that on wind-ward side was about8 for street canyons where the space between buildings was small.
图中每一处云量的上升都与迎风面斜坡相关，同时，云量的下降出现在背风面的山谷。
Each rise correlates with the windward-facing slope of the terrain, while declines in cloudiness are found in valleys on the leeward side.
他们点起的火堆能烤一头牛，现在火旺得很，只能从背风面靠近它，即使这样也得倍加小心。
They had lit a fire fit to roast an ox, and it was now grown so hot that they could only approach it from the windward, and even there not without precaution.
结果表明：车体迎风面及背风面表面压力分布规律基本一致，验证了数值模拟计算模型的准确性；
The results show that the pressure distribution on external surface at both windward and leeward is basically the same.
结果表明，林带背风面2.5~19H范围内形成的风速降低区，是林带主要保护区和作用范围。
The results show that, the whole protection area is composed of primary area leeward shelterbelt from 2.5H to 19H and second area windward shelterbelt within 3.5H.
结果表明：车体迎风面及背风面表面压力分布规律基本一致，验证了数值模拟计算模型的准确性；
Numerical computation was carried out by FLUENT for the test train passing by the east of "Mengjin", and the computation result was compared with that of the real vehicle measurement.
阿曼一座新月形的沙丘脊由强信风吹成，在迎风的方向（图左侧）形成一面平缓的凸破，在背风面形成凹坡。
This crescent-shaped ridge of sand dune in Oman was formed by strong trade winds that form a smooth hill facing the wind (left) and concave slipface on the back.
本文根据湍流统计理论和野外观测数据，详细分析了林带背风面湍流自相关、空间相关和湍流积分尺度特征。
In this paper, autocorrelation, space correlation, and integral scale of turbulence were discussed, using theory of turbulence statistics and field observation data.
稳定的空气，如果空气不稳定，气流会从山顶而不是侧面吹向山后并砸落地面，这时背风面存在强烈的下降乱流。
The stability of the air. If the air is unstable, the air may flow over the top of the hill instead of round the side, meaning that it will come crashing down in an area of sink behind the hill.
稳定的空气，如果空气不稳定，气流会从山顶而不是侧面吹向山后并砸落地面，这时背风面存在强烈的下降乱流。
The stability of the air. If the air is unstable, the air may flow over the top of the hill instead of round the side, meaning that it will come crashing down in an area of sink behind the hill.
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