| 释义 |
piston/ˈpɪstən ||; ˈpɪstṇ/noun [c] a piece of metal in an engine, etc that fits tightly inside a tube (shaft). the piston is moved up and down inside the tube and causes other parts of the engine to move. 活塞 ☞picture at hydraulic 见hydraulic插图 pis·ton /`pɪstṇ; ˈpɪstən/n [c]a part of an engine that moves up and down to make the other parts move 活塞 |