| 单词 | sector |
| 释义 | Word Frequency sector(ˈsɛktə) noun 1. a part or subdivision, esp of a society or an economy the private sector 2. geometry either portion of a circle included between two radii and an arc. Area:1⁄2 r2θ, where r is the radius and θ is the central angle subtended by the arc (in radians) 3. a measuring instrument consisting of two graduated arms hinged at one end 4. a part or subdivision of an area of military operations 5. computing the smallest addressable portion of the track on a magnetic tape, disk, or drum store Derived forms sectoral (ˈsectoral) adjective Word origin C16: from Late Latin: sector, from Latin: a cutter, from secāre to cut |
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