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- constant altitude PPI 等高平面位置指示器
- Fly in a circle back to the starting point, while maintaining constant altitude, and speed. 保持等高度及等速度,执行前进水平圆一圈後回到起始点。
- No doubt you are familiar with geographical contour maps, which show lines of constant altitude. 无疑，你们熟悉地理上的等值线地图，它示出等高线。
- While maintaining constant altitude, speed and heading, begin a forward hovering circle to either the right or the left. 将直升机保持在同高度、同速度以及机头朝固定的方向,向右或向左开始执行水平圆的动作。
- With the helicopter hovering Nose-In pull back cyclic, and work the collective to complete at least two (2) full back tumbles while maintaining a constant altitude and heading. 机头朝向操控者保持停悬，将升降舵拉升舵使直升机保持固定的高度及方向，向后翻滚至少二圈。
- The tentative design of constant altitude flight solid rocket composed of the sustainer ,the booster and its simple control method is presented. 介绍了主发动机加助推器和简易控制方法实现固体火箭等高飞行的设计方案。
- While maintaining constant altitude, speed and heading begin a circle to either the right or the left with the tail of the helicopter pointing to the center of the circle. 保持机尾朝向圆心,且以等高度、等速度的方式,执行水平圆。
- With the helicopter hovering Tail-In pull back cyclic, and work the collective to complete at least two (2) full back tumbles while maintaining a constant altitude and heading. 机尾朝向操控者保持停悬，将升降舵拉升舵使直升机保持固定的高度及方向，向后翻滚至少二圈。
- Abstract: Two different approximate solutions are proposed and compared with the numerical solution of the constant altitude - constant Mach number cruise range for turbojet/fan aircraft. 文章摘要: 给出了涡喷／涡扇飞机定高定速巡航段航程的两种估算方法，考虑了机翼弯度和耗油率变化的因素，并进行了数值计算。
- Constant altitude plan position indicator, CAPPI; 等高平面位置显示器;
- Constant Altitude Plan Position Indicator 等高平面位置指示器
- Improved Constant Altitude Control 改进的等高控制
- His wife was a constant inspiration to him. 他的妻子经常鼓励他。
- Her constant complaining just sticks in my craw. 她那不断的诉苦真使我受不了。
- We are flying at an altitude of 20000 feet. 我们的飞行高度是20000英尺。
- The airliner flew at an altitude of 20000ft. 客机在两万英尺的高度飞行。
- The machinery requires constant maintenance. 这些机器需要经常保养维修。
- At this altitude you often get strong winds. 在这一纬度地区，经常有大风。
- I was infuriated by/with their constant criticism. 他们没完没了地批评把我给气坏了。
- The plane flew at an altitude of30000 feet. 飞机在三万英尺的高空飞行。
