pilot circuit pressure 先导回路压力
pilot wire circuit 控制线电路
pilot make busy circuit 引示闭塞电路
pilot oil circuit 先导油回路
hydraulic pilot oil circuit 先导液压油回路
pilot control valve circuit 先导控制阀回路
implement circuit pilot pressure line 机具油路先导压力管路
flat pilot control circuit [电子] 平调导频控制电路
pilot t circuit 导频电路
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