这些云层发生在卷云或卷层云，它们通常包含着冰晶和过冷的水滴——温度低于冻结温度却依然能保持着其液体的状态。
These occur in cirrus or cirrostratus clouds, which are often composed of ice crystals and super-cooled water droplets - water that is below freezing temperature, but still in liquid form.
过冷却的水滴比冰晶容易蒸发。
局部收集系数反映了空气中过冷水滴的撞击特性，对其进行计算是防、除冰研究的重要方面。
It is a significant aspect for research of local collection efficiencies that reflect the impingement properties of the super cooling water droplets in the air.
通过对空气流场、过冷水滴运动轨迹的计算和能量方程的求解，得到了多种状态下的风速管表面温度。
Based on the calculation of aerodynamic flow field, overcooled water droplets trajectories and energy equation, surface temperatures of the anemometer under various conditions were obtained.
通过对空气流场、过冷水滴运动轨迹的计算和能量方程的求解，得到了多种状态下的风速管表面温度。
Based on the calculation of aerodynamic flow field, overcooled water droplets trajectories and energy equation, surface temperatures of the anemometer under various conditions were obtained.
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