main-spring

英 ['meɪnspr'ɪŋ] 美 ['meɪnspr'ɪŋ]

• n. 主发条

main-spring的英文翻译是什么意思，词典释义与在线翻译：

英英释义

名词 mainspring:

1. the most important spring in a mechanical device (especially a clock or watch); as it uncoils it drives the mechanism