| 单词 | 周期律 |
| 例句 | DEFINITIVE EXAMPLES 权威例句〔periodic law〕The principle that the properties of the elements recur periodically as their atomic numbers increase.周期律：元素属性根据原子数的增长周期性出现的规律美国传统〔periodicity〕The tendency of chemical elements with similar positions in the periodic table to have similar properties.周期律：化学元素在周期表中有相似位置时具有相似特性的趋势美国传统 |
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