| 单词 | quantum |
|---|---|
| 音标 | ['kwɑntəm] |
| 解释 | n.量子；定量 |
| 红宝书 | 【英】 n.定量; 量子(any of the small subdivisions of a quantized physical magnitude) 【记】 quant(数量)＋um→定 量 【同】 同根词：quantity(数 量，总量); quantitative(数量的) |
| 字源 | quantum (n.) 1610s, "one's share or portion," from Latin quantum (plural quanta) "as much as, so much as; how much? how far? how great an extent?" neuter singular of correlative pronomial adjective quantus "as much" (see quantity). Introduced in physics directly from Latin by Max Planck, 1900; reinforced by Einstein, 1905. Quantum theory is from 1912; quantum mechanics, 1922; quantum jump is first recorded 1954; quantum leap, 1963, often figurative. |
| 不择手段背单词 | n. 定量; 量子 【例】the quantum of rainfall(降雨总量) 【记】quant数量, um一定量 【参】quantity(n 数量, 总量) |
| 趣味全助记 | 【记】quantity + sum 总和 |
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