利用常规仪器（堆控制室中的启动装置）测得反应堆中稳定的中子计数率来刻度控制棒的反应性当量。

The steady counting rates of neutron in reactor are measured by a conventional instrument(the start-up devices)to calibrate reactivity worth of a control rod.

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文章介绍了在微型堆零功率实验装置上用脉冲法、断源法和周期法对原型微堆中心控制棒及反射层效率测量的结果，并进行了讨论。

The paper reports the measurement of the effectiveness of control rodreflectors on ZPR with pulse method, source cut method and period method. Theexperiment method and results are discussed.

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水力步进缸系统是以流体动压为动力的反应堆新型控制棒驱动装置。

A hydraulic step cylinder system (HSCS) used as a new kind of nuclear control rod driving system is driven by dynamic pressure.

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