= coffer-dam, n.
| 单词 | θ210216 | 
| 释义 | society > occupation and work > industry > engineering > 			[noun]		 > dam in hydraulic engineering (2)		 coffin-dam1587 = coffer-dam, n. coffer-dam1736 Hydraulic Engineering. A watertight enclosure used for obtaining a dry foundation for bridges, piers, etc.; usually constructed of two rows of… | 
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