clockern.赛马预赛时计速员；计时员clockn.时钟v.计时；打卡Clock dividers时钟分频器clockwork feed钟表发条clock ensemble钟组clock terminal时钟脉冲终端clock reaction计时反应clockgenerator时钟脉冲发生器clocking fault时钟信号故障clock movement钟机心clock-gating门控时钟clock recovery时钟恢复