单词 bur-pump 释义 burr-pump, bur-pump Naut.[f. bur, or burr n.1 + pump.]A form of bilge-pump with the piston so constructed as not to require a valve: see quot.1627Capt. Smith Seaman's Gram. ii. 8 A Bur Pump. The Dutch men vse a Burre pumpe..wherein is...