radar aircraft altitude的意思|示意

With this radar system and a specially trained Air Force crew the aircraft can operate at a low altitude and in night or adverse weather conditions.

有了这种雷达和经过特别训练的空军机组，飞机可以在很低的高度、夜间或不利的天气条件下飞行。

Unlike high altitude aircraft, helicopters aren't so vulnerable to being seen by radar, as they fly low and are often hidden by the terrain. The big issue is the sound.

与在高空飞行的飞机不同，直升机不容易被雷达发现，因为它的飞行高度较低，且常常被地形所隐藏，因此最大的问题是噪音。

It will use radar, balloons and aircraft to look at the role of another sort of high-altitude cloud: cirrus clouds, which get spun off the tops of storms.

该工程将使用雷达、热气球与大气层飞行器来研究另一种高端云的作用，其名为卷云-它是在暴风雨出现时从其顶端意外形成的。