Airspeed indicator

（重定向自Air speed indicator）

Airspeed indicator markings for a light multiengine airplane.

Airspeed indicator and Machmeter of a large jet aircraft with moveable pointers (bugs) at the bezel

The airspeed indicator or airspeed gauge is an instrument used in an aircraft to display the craft's airspeed, typically in knots, to the pilot. In its simplest form, an ASI measures the difference in pressure between the air around the craft and the increased pressure caused by propulsion. The needle tracks pressure differential but the dial is marked off as airspeed.

单词	Air speed indicator
释义	Air speed indicator 原声例句爷爷奶奶的词汇课 The air speed indicator tell us how fast we're going. 飞行速度指示器告诉我们飞行的速度。英语百科 Airspeed indicator （重定向自Air speed indicator） The airspeed indicator or airspeed gauge is an instrument used in an aircraft to display the craft's airspeed, typically in knots, to the pilot. In its simplest form, an ASI measures the difference in pressure between the air around the craft and the increased pressure caused by propulsion. The needle tracks pressure differential but the dial is marked off as airspeed.
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