a mechanism consisting in general of an escape wheel and an anchor,used especially in timepieces to control movement of the wheel and to provide periodic energy impulses to a pendulum or balance.是什么意思_a mechanism consisting in general of an escape wheel and an anchor,used especially in timepieces to control movement of the wheel and to provide periodic energy impulses to a pendulum or balance.在线翻译_英语_读音_用法_例句