Maintain Visual Flight什么意思

Very Funny非常有趣 Video Frequency视频 Vertical Flight垂直飞行 vinyl fluoride氟乙烯 Velocity Factor速度系数 Voltage Forward正向电压 Variable Frequency可变频率 Vulcanized Fiber硬化纸板 Virtua Fighter (Sega game)虚拟战士(世嘉游戏) Vampire Freaks (online community)吸血鬼狂(在线社区) Visual Flight (rules)目视飞行(规定) Visit Florida参观弗罗里达州 Variance Factor (ATM)变异系数(ATM) Version FrançaiseVersion Française Ventricular Fibrillation心室纤维性颤动