| 单词 | secondary |
| 释义 | secondary [`sek·ǝn´der·ē] ELECTRICITY Low-voltage conductors of a power distributing system. ELECTROMAGNETISM See <<secondary winding>> GEOLOGY A term with meanings that changed from early to late in the 19th century, when the term was confined to the entire Mesozoic era; it was finally replaced by Mesozoic era. |
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