control rod drive shaft
control rod drive shaft storage
control rod drive accumulator
control rod drive assembly
control rod drive chamber
control rod drive housing
control rod drive hydraulic system
control rod drive mechanism
控制棒驱动机构
操纵杆驱动机构
驱动机构
控制棒传动机构
control rod drive mechanism coil
control rod drive mechanism cooling shroud
control rod drive mechanism nozzle leakage monitoring system
control rod drive mechanism protective cover
control rod drive operability
control rod drive package
control rod drive penetration