An indication of the presence of a minute amount of some constituent in a compound; a quantity so minute as to be inferred but not actually…
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| 单词 | θ8478 |
| 释义 | the world > the earth > weather and the atmosphere > weather > precipitation or atmospheric moisture > [noun] > amount too small to be measured (1) trace1908 An indication of the presence of a minute amount of some constituent in a compound; a quantity so minute as to be inferred but not actually… |
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