| 单词 | datum-line |
| 释义 | 詞目：Datum-line 1908顏惠慶英華大辭典Datum-linen.1The line along a fixed plane from which are reckoned all the heights along a section, (土木學)測高基線, 水準基線（土木學）測高基線、水準基線p 549 1908顏惠慶英華大辭典 1筆 |
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