| 单词 | buoyancy tank | 
| 释义 | > as lemmasbuoyancy tank   buoyancy tank  n. ΘΚΠ the world > matter > properties of materials > lightness > 			[noun]		 > rising due to lightness > buoyancy > device providing buoyancy > specific cork1496 air chamber1664 pontoon1676 buoyancy tank1928 buoyancy chamber1930 1928    C. F. S. Gamble Story N. Sea Air Station xviii. 309  				In order to dive a submarine her commander fills the buoyancy tanks with sea-water. < as lemmas | 
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