风中振动时,刷毛会产生反作用力,但同时它也可以减少机翼滑流,产生一个低气压乱流,机翼上形成回力,因而减小阻力。
Vibrating in the wind, the bristles create some drag. But they also reduce the wing's slipstream, an area of low-pressure turbulence that pulls back on the wing, and hence reduce drag.
结果显示,圆盘式旋流纺纱加捻器的两级喷嘴气压的配置对成纱质量有较大影响。
Results show that the collocation of two nozzles' pressure has a great effect on the yarn performance.
在相同的转速和偏心率下,滑移流效应降低了气压分布的曲率,进而降低了气浮轴承所能够提供的承载能力。
At the same rotating speed and eccentricity ratio, the slip effect reduce the gas pressure curvature and hence the load carrying capacity.
用海面风场和海面气压场启动的海洋表面流,与实况也较一致。
The ocean surface currents driven by the sea surface winds and the sea surface pressure fields are also close to the observations.
连接管的流阻造成吸气压力的下降,对工质密度产生严重影响;系统中残留的冷冻油,阻碍制冷剂的蒸发。
The drop of suction pressure which is caused by flowing obstruct of linked tube leads to serious influence to refrigerant density.
采用水-气二相流模型模拟得到水相、气相的流动状态,为定量研究孔隙气压力对入渗水流的影响提供了有效途径。
And flow of water and air simulated by numerical model of water-air two-phase flow could be used to quantitatively analyze the influence of air pressure on infiltration of water into soil.
用有限元方法模拟了恒流加热方式下气压对传感器温度分布和温度大小的影响。
Temperature distribution and its amplitude of the sensor under constant current excitation are simulated with finite element method.
一场热带低气压风暴袭击中美洲,引发的洪涝灾害和泥石流造成至少18人死亡。
A tropical depression storm pounding Central America has triggered floods and landslides that have left at least 18 people dead, officials say.
溅射特性研究结果表明:屏极电压和溅射气压对离子束均匀性和束流密度影响显著;
The results about the research on the characters of ion beam sputtering show that grid voltage and sputtering gas pressure have great influences on ion beam distribution and current.
影响气室内部流场分布情况的主要因素,可概括为:充气压强、电弧大小、气室长径比、气室体积、电弧位置。
The main factors effect the pressure and temperature of the chambers can be summarized as:air pressure, arc current, L/D, chamber volume, arc position.
详细分析了轴快流co2激光器控制系统的工作原理及过程,着重研究了气压控制系统以及功率控制系统的原理。
The operation process and primary principle of the FAF CO2 laser control system are analyzed in detail. The theories are mainly studied of the pressure control system and the power control system.
冬季戴维斯海峡海冰在1981年发生突变,突变前后相应高度场、海平面气压场和流场等大气环流场均有显著差异。
There are remarkable differences in 500 hPa heights, SLP, stream fields before and after 1981, when the sea-ice area in Davis Strait abruptly changed.
冬季戴维斯海峡海冰在1981年发生突变,突变前后相应高度场、海平面气压场和流场等大气环流场均有显著差异。
There are remarkable differences in 500 hPa heights, SLP, stream fields before and after 1981, when the sea-ice area in Davis Strait abruptly changed.
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