The spinning balance wheel that paces a mechanical watch typically rocks back and forth at about five beats a second 而控制机械?快慢的旋转平衡摆轮每秒通常只能来回五次左右。
Regulating systems ( balances ) with variable radius of gyration are allowed provided they comply with criteria one ( a ) and one ( b ) 带动摆轮旋转的摆碟、调校等时节拍的结构和快慢针等机制及其零件，都必须达到法则1a和1b的要求。
The dynamic poising of the watch - balance enhances the performance of each movement . the chronometer - maker ’ s expert hand plays an essential role in this process 腕表平衡摆轮的动态性能决定了机芯的性能。生产精密时计的专家们的手工调试在这一工序中起着关键性的作用。
