| 单词 | rotation |
| 释义 | Word Frequency rotation(rəʊˈteɪʃən) noun 1. the act of rotating; rotary motion 2. a regular cycle of events in a set order or sequence 3. a planned sequence of cropping according to which the crops grown in successive seasons on the same land are varied so as to make a balanced demand on its resources of fertility 4. mathematics a. a circular motion of a configuration about a given point or line, without a change in shape b. a transformation in which the coordinate axes are rotated by a fixed angle about the origin c. another name for curl (sense 11). Abbreviation (for sense 4c): rot 5. a. the spinning motion of a body, such as a planet, about an internal axis Compare revolution (sense 5a)b. one complete turn in such motion Derived forms rotational (roˈtational) adjective |
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