往复式内燃机reciprocate: vt.,vi. 1.互换,交换;酬答,报答 (with) ...internal: adj. 1.内的,内部的 (opp. external ...combustion engine: 内燃机。 internal-combustion reciprocating engine: 活塞式发动机delta internal combustion engine: 三角形内燃机下载手机词典可随时随地查词查翻译