時間：2011-03-11 23:13來源：藍天飛行翻譯 作者：admin 點擊：次
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mile. A unit of distance in the English system of measurement. One statute mile is equal to 5,280 feet. One nautical mile is one minute of arc of a great circle of the earth, and is equal to approximately 6,080 feet. milli, m. The metric prefix meaning one thousandth of a unit, 1/1,000, 0.001, or 1 x 10-3. Millimeters, milliliters, milliohms, milligrams, and millivolts are commonly used terms having this prefix. milliammeter. An instrument that measures electrical current in units of thousandths of an ampere. millibar. A measure of pressure in the metric system that is equal to one thousandth of a bar. One bar is a pressure of 14.5 psi, or 29.52 in. Hg. (105 pascals or 105 newtons per square meter), and one millibar is equal to a pressure of 1,000 dynes per square centimeter, 0.014 69 psi, or 0.029 52 in. Hg. Standard sea level pressure equal to 1,013.2 millibars. milling machine. A type of metalworking machine tool. The work to be machined is fastened to a movable table, and the table moves to feed the work into a rotating tool called a milling cutter. millivoltmeter. An electrical instrument that measures voltage in units of millivolts (thousandths of a volt). MIL standards. A group of standard specifications used by the United States Military services to describe the products they buy. MIL standards are known and used by most manufacturers to keep parts standardized and interchangeable. minicomputer (digital computer). A small- to medium-size digital computer. There is no clear-cut distinction between a small minicomputer and one of the larger microcomputers, but generally speaking, a minicomputer is faster and can be expanded more than a microcomputer. minidisk (digital computer component). A 5 1/4-inch-diameter floppy diskette, used as a mass storage device with a microcomputer. Microcomputers use 8-inch, 5 1/4-inch, and 3 1/2-inch diskettes. The 8-inch diskette is called a floppy diskette, the 5 1/4-inch diskette is called a minifloppy, and the 3 1/2-inch diskette is called a microfloppy. minimum controllable airspeed (VMC). The lowest airspeed at which an airplane is controllable with one engine developing takeoff power and the propeller on the other engine windmilling. VMC is marked on an airspeed indicator with a red radial line. minimum crossing altitude. See MCA. minimum descent altitude. See MDA. minimum enroute IFR altitude. See MEA. |
