时间：2011-03-11 23:11来源：蓝天飞行翻译 作者：admin 点击：次
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circle-to-land maneuver. A maneuver initiated by the pilot to align the aircraft with a runway for landing when a straight-in landing from an instrument approach is not possible or is not desirable. “Circle to runway (runway number)” (air traffic control). A phrase used by ATC to inform the pilot that he must circle to land because the runway in use is other than the runway aligned with the instrument approach procedure. When the direction of the circling maneuver in relation to the airport/runway is required, the controller will state the direction and specify a left or right downwind or base leg as appropriate. circuit (electrical). The complete path followed by electrons from the negative terminal of the source of electrical energy, through the electrical load, back to the positive terminal of the source. All electrical circuits must have at least three components: the source of electrical energy, the electrical load, and conductors to connect the source and the load. circuit breaker (electrical circuit component). A device which opens an electrical circuit when an excess of current flows. A circuit breaker may be reset to restore the circuit after the fault causing the excessive current has been corrected. circuit diagram. A drawing which uses conventional symbols to show the way the components in an electrical system or fluid power system are connected. Circuit diagrams do not show the physical relationship of the components, but the flow of electrons or fluid can be traced by following the circuit diagram. circular motion. Motion of an object along a curved path in which the object stays a constant distance from a given point, called the center of motion. |
