| 单词 | false bottom |
| 释义 | false bottom [¦fȯls `bäd·ǝm] CIVIL ENGINEERING A temporary bottom installed in a caisson to add to its buoyancy. METALLURGY An insert put in either member of a die set to increase the strength and improve the life of the die. MINING ENGINEERING A flat, hexagonal or cylindrical iron die upon which ore is crushed in a stamp mill. |
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