您要查找的是不是：
- Signal Corps Aircraft Signal Service 通信兵飛機通信勤務
- The aircraft was flying above thick fog. 飛機在濃霧上空飛行。
- The speed of this aircraft is very high. 這架飛機的速度非常快。
- He assembled the model aircraft bit by bit. 他一塊一塊地裝配飛機模型。
- Enemy aircraft dropped bombs on the city. 敵機向這個城市投擲炸彈。
- A red light is usually a signal of danger. 紅燈通常是危險的信號。
- The watchtower followed the aircraft by radar. 瞭望塔通過雷達追蹤這架飛機的行蹤。
- There's not much leg-room in these aircraft. 這些飛機的坐位沒有什麽伸腿的空間。
- Artillery and aircraft were involved in the action. 在這次戰鬥中，使用了大炮和飛機。
- He sat at the controls of the aircraft. 他坐在飛機的操縱裝置前。
- The aircraft company deals with freight only. 這家航空公司只經營貨運業務。
- All aircraft must fuel before flight. 所有飛機飛行前都必須加油。
- The new aircraft is undergoing safety tests. 這種新飛機正在接受安全性能檢驗。
- I stood watching for the signal to change to green. 我站著等待交通信號轉為綠燈。
- Let's set the clock by the radio time signal. 咱們照著收音機的報時信號把鍾對一對。
- The missiles were shot at the aircraft from a ship. 從軍艦上向飛機發射導彈。
- A red lamp is often a danger signal. 紅燈常常是危險的信號。
- A reflected signal on a communication channel. 一種在通信通道上反射回來的信號。
- The rise in prices was a signal for rebellion. 物價上漲引起了叛亂。
- The wings of the aircraft had iced up. 機翼上結了一層冰。
