单词 impeller 释义 impeller|mpl(r)|[f. impel v. + -er1.]a. One who or that which impels.1685Boyle Enq. Notion Nat. vi. 215 By other portions of matter (which are also extrinsical impellers) acting on them.1707S. Clarke 2nd Def. Immat. Soul (1715) 24 Is i...
