时间：2011-03-11 23:13来源：蓝天飞行翻译 作者：admin 点击：次
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MIS (meteorological impact statement). An unscheduled planning forecast describing conditions expected to begin within 4 to 12 hours which may impact the flow of air traffic in a specific center’s (ARTCC) area. miscible. Capable of being dissolved into, or blended with, another material. Oil is highly miscible in gasoline, but only slightly miscible or not miscible at all in water. misfire (explosive charge). A condition in which an explosive charge fails to ignite, or to fire. missed approach (air traffic control). A maneuver conducted by a pilot when an instrument approach cannot be completed to a landing. The route of flight and altitude are shown on instrument approach procedure charts. A pilot executing a missed approach prior to the missed approach point (MAP) must continue along the final approach to the MAP. missed approach point. See MAP. missed approach procedure (ICAO). The procedure to be followed if the approach cannot be continued. mist. Droplets of a liquid which are so small they float, or remain suspended, in the air. The droplets making up the atmospheric condition we call mist are larger than the droplets making up haze and smaller than those making up fog. mist coat. A very light coat of metal primer. A mist coat is so thin that the metal is still visible, but the primer makes pencil marks easy to see. miter (woodworking). To cut the edges of boards or surfaces in such a way that they match, or fit together. miter box. A device that holds a piece of wood and a saw, so the saw can cut the wood at an angle to form a mitered joint. The wood used in a picture frame is cut in a miter box so that the ends match, forming a right angle and leaving no gap. miter square (woodworking tool). A small, adjustable T-square used for marking the ends of wood strips to be cut at an angle other than a right angle. Some miter squares have the blade rigidly set at an angle of 45° to the head, and others have an adjustable blade that can be set at any angle relative to the head. mixed-exhaust engine (gas turbine engines). A type of turbofan engine in which the exhaust from the gas generator mixes with the air from the fan that bypasses the gas generator. These two flows mix before they leave the exhaust system of the engine. mixed number. A number that contains both an integer and a fraction. mixer (electronic circuit). An electronic circuit used in a superheterodyne radio receiver. When two electrical signals having different frequencies are fed into a mixer, the mixer output will contain four signals: Signals having the two original frequencies, a signal whose frequency is the sum of the two original frequencies, and one whose frequency is the difference between the two original frequencies. The output of the mixer is directed into a filter circuit which selects the difference frequency for use in subsequent stages as the intermediate frequency, or IF. mixing ratio (meteorology). The ratio by weight of the amount of water vapor in a volume of air to the amount of dry air. Mixing ratio is usually expressed as grams per kilogram (g/kg). |
