The Instrument Rating gives the ability to control the aircraft without reference to the ground or horizon, using flight and navigation instruments.
仪表等级赋予飞行员控制飞机的能力，而不用参考地面或地平线，只使用飞行和导航仪表。
2
Artificial horizon, an instrument of cockpit meter systems of the ACTE, is mainly used to indicate the flight attitude, such as pitching Angle and tilt Angle etc.