对于次级和初级中子源棒，分别阐述了重要的内压问题和有关的安全性能要求。
For the secondary and primary neutron source rods, the important internal pressure problem and the safety performance requirements are described respectively.
对于次级和初级中子源棒，分别阐述了重要的内压问题和有关的安全性能要求。
For the secondary and primary neutron source rods, the important internal pressure problem and the safety performance requirements are described respectively.
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