altitude hold meaning in Chinese

高度保持

Autopilot in altitude hold mode produces a 200 fpm descent
自动驾驶仪在高度保持模式令飞机每分钟自动下降200尺。
Problem : autopilot in altitude hold mode produces a 200 fpm descent
问题：自动导航固定高度飞行时每分钟下降200英? 。
The control laws of longitudinal and lateral - directional autopilot modes are designed based on root locus theory . the control laws of altitude holding mode , heading holding mode , auto - throttle control and air speed holding mode are designed as well
研究了无人机的飞行控制技术，利用根轨迹法设计了无人机的纵向与侧向姿态保持控制律，设计了高度保持、航向保持、自动油门及速度保持控制律。
This paper , in advantage of modern control theories , designed the pitch control system and the altitude holding system of the x armed helicopter , and present digital simulation , coupling analysis , sensitivity analysis , system performance analysis under different input and initial condition
本文应用现代控制理论设计了某型武装直升机的俯仰角控制系统和高度保持系统，并进行了数字仿真、耦合分析、飞行状态变化对控制系统性能的影响分析，及在不同输入初始条件下的系统性能分析。