| 单词 | axis |
| 释义 | axis (once / 1863 pages) 1n 2n An axis is a straight line, sometimes seen, sometimes not, that is important in mathematics, art, science and our survival. The most famous axis is the one the earth spins around, giving us the 24-hour day. In graphs, one side is usually the "X axis" and the other the "Y axis." Axis lines are also the lines that run through spheres, like our earth, around which those spheres rotate. In a totally different area, axis is used to describe countries in an alliance. In World War II, Germany, Japan and Italy were known as the Axis Powers. More recently, George W. Bush referred to Iraq, Iran, and North Korean as an Axis of Evil. WORD FAMILYaxis: axial, axises+/axial: axially, biaxial USAGE EXAMPLESThey imagine this as a tube sitting around the solid inner core, running along Earth’s rotation axis. BBC(Dec 19, 2016) First, the tilt of the earth’s axis relative to the sun. New York Times(Dec 07, 2016) “What we see here is the enemy reacting to a new axis of advance,” said coalition spokesman U.S. Washington Times(Dec 07, 2016) 1 1n a straight line through a body or figure that satisfies certain conditions Hypo|Hyper coordinate axis one of the fixed reference lines of a coordinate system major axisthe longest axis of an ellipse or ellipsoid; passes through the two foci semimajor axisone-half the major axis of an ellipse; the distance from the center of an ellipse to one end minor axisthe shorter or shortest axis of an ellipse or ellipsoid semiminor axisone-half the minor axis of an ellipse optic axis, principal axisa line that passes through the center of curvature of a lens so that light is neither reflected nor refracted optic axisin a doubly refracting crystal, the line in the direction of which no double refraction occurs x-axisthe horizontal axis in a plane coordinate system y-axisthe vertical axis in a plane coordinate system z-axisthe third axis in a 3-dimensional coordinate system line a spatial location defined by a real or imaginary unidimensional extent 2n the center around which something rotates Syn|Hypo|Hyper axis of rotation pin, pivot axis consisting of a short shaft that supports something that turns rotor head, rotor shaftthe axis around which the major rotor of a helicopter turns fulcrumthe pivot about which a lever turns pintlea pin or bolt forming the pivot of a hinge mechanism device consisting of a piece of machinery; has moving parts that perform some function 3n the main stem or central part about which plant organs or plant parts such as branches are arranged Hypo|Hyper rachis axis of a compound leaf or compound inflorescence spadixthe fleshy axis of a spike often surrounded by a spathe stalk, stem a slender or elongated structure that supports a plant or fungus or a plant part or plant organ 4n the 2nd cervical vertebra; serves as a pivot for turning the head 2Syn|Hyper axis vertebra cervical vertebra, neck bone one of 7 vertebrae in the human spine located in the neck region n a group of countries in special alliance Syn|Hypo|Hyper bloc scheduled territories, sterling area, sterling bloc the group of countries whose currencies are tied to the British pound sterling alignment, alinement, alliance, coalition an organization of people (or countries) involved in a pact or treaty Axis (once / 5552 pages) n WORD FAMILY Axis: Axes USAGE EXAMPLESHolocaust Memorial Museum, was the first Axis partner to permit the deportation of its Jews for the Final Solution. Washington Post(Dec 08, 2016) By midday, the lines snaked back and forth across the parking lot outside the Axis Bank branch in central New Delhi. Seattle Times(Nov 15, 2016) The occasion was his new play, “Attorney Street,” which he is performing through Saturday at Axis Theater in Sheridan Square. New York Times(Nov 13, 2016) n in World War II the alliance of Germany and Italy in 1936 which later included Japan and other nations the Axis opposed the Allies in World War II Hyper alignment, alinement, alliance, coalition an organization of people (or countries) involved in a pact or treaty |
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