| 单词 | cross section |
| 释义 | Word Frequency cross sectionnoun 1. mathematics a plane surface formed by cutting across a solid, esp perpendicular to its longest axis 2. a section cut off in this way 3. the act of cutting anything in this way 4. a random selection or sample, esp one regarded as representative a cross section of the public 5. surveying a vertical section of a line of ground at right angles to a survey line 6. physics a measure of the probability that a collision process will result in a particular reaction. It is expressed by the effective area that one participant presents as a target for the other Derived forms cross-sectional (ˌcross-ˈsectional) adjective Word Frequency cross-section or cross section (ˈkrɒsˌsɛkʃən) noun 1. a random selection or sample a cross-section of the public 2. variety I was surprised at the cross-section of people there. a wide cross-section of sport 3. a section formed by cutting across a solid, esp perpendicular to its longest axis a cross-section of a human brain a cross-section of an aeroplane |
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