tilted trough meaning in Chinese

斜槽

The result shows that : the sand - dust storm occured in favorable climate background that is drought and rainless , the tilted trough and mongolia cyclone are the important weather systems that caused the severe sand - dust storm , tilted trough and strong frontal zone caused the mongolia cyclone developed and the clod front strengthened at surface , high jet and ferrel circulation are the main reason that momentum spreaded downward from higher level and frontal zone strengthened on lower level
结果表明：沙尘暴是在干旱少雨的有利的气候背景下产生的。斜压槽和蒙古气旋是触发这次强沙尘暴天气过程的重要的天气系统，高空斜压槽和强锋区促使了地面蒙古气旋的发展和冷锋的加强，诱发沙尘暴天气。高空急流及其下方的ferrel环流起到了高层动量下传和加强低层锋区的重要作用。