indicator air speed

例句：

1. 1. The aircraft's indicator air speed is displayed on the instrument panel.
   飞机的指示器空气速度显示在仪表盘上。
2. 2.The pilot adjusted the altitude to maintain a safe indicator air speed.
   飞行员调整了高度，以保持安全的指示器空气速度。
3. 3. The wind speed and direction were measured using an anemometer, which measures the velocity of air particles at different heights.
   使用风速计测量了风速和方向，风速计测量不同高度的空气粒子的速度。