| 单词 | double-acting |
| 释义 | double-acting /dub"euhl ak"ting/, adj. 1. (of a reciprocating engine, pump, etc.) having pistons accomplishing work in both directions, fluid being admitted alternately to opposite ends of the cylinders. Cf. single-acting. 2. (of a hinge of a door or the like) permitting movement in either direction from the normal, or closed, position. 3. having twice the usual effectiveness, strength, use, etc. [1835-45] |
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