因其使用燃料而与电动、发条驱动或液压发动机而区别的机械装置。
Such a machine distinguished from an electric, spring-driven, or hydraulic motor by its use of a fuel.
回到1495年，列奥纳多·达芬奇设计了也许是世界上第一台机器人——一整套用曲柄发条驱动的自动盔甲骑士。
Way back in 1495, Leonardo da Vinci designed what was probably the first robot - an automated suit of armor with a windup crank.
在1500年初用发条代替钟锤来驱动时钟发明后不久，就出现了第一批表。
The first watches appeared shortly after 1500, when the mainspring was invented as a replacement for weights in driving clocks.
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