| 单词 | cofferdam |
| 释义 | cofferdam /kaw"feuhr dam', kof"euhr-/, n. 1. a watertight enclosure placed or constructed in waterlogged soil or under water and pumped dry so that construction or repairs can proceed under normal conditions. 2. Naut. a sealed void between two bulkheads, as for insulation or as an extra barrier to the escape of liquids or vapors. [1730-40; COFFER + DAM1] |
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