极涡是该区域四季存在、冬强夏弱、向上延伸至平流层下部的基本环流系统。
Polar vortex is a basic circulation system which exists in every season (strong in winter and weak in summer) and can extend to the lower level of stratosphere.
该方法适用于具有强旋转流动涡量的测量。
The method is applicable for measuring vorticity of a strong rotational flow.
基于多重线涡模型（MLVM），本文建立了一种计算机时少、收敛性强的适用于大迎角涡流势流数值模拟的迭代算法。
A robust iterative method suitable for the numerical simulation of vortex flows at high angles-of-attack is established based upon the multiple line-vortex model (MLVM).
低层辐合和气旋性涡度的加强所产生的强上升运动造成较大的降水过程。
The causations of heavy rain in this area are convergence in the low level and intensity of cyclonic vorticity and strong upward motion.
通过试验，该智能涡街流量计系统运行可靠，流量测量准确，数据的显示清晰明了，系统数据保密性能和抗干扰能力强。
After several tests, it is showed that the system is reliable, flow measurement is accurate, and data's confidentiality and the system's anti-interference functions are very strong.
热带海洋晴空发生强气流涡动的频率如何？
How often does severe clear air turbulence occur over tropical oceans?
热带海洋晴空发生强气流涡动的频率如何？
How often does severe clear air turbulence occur over tropical oceans?
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