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。

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This paper described the function of neutron source assembly, the principle of neutron emission, and also described the structure and characteristics for primary and secondary neutron source assembly.

介绍了反应堆堆芯中子源的功能，发射中子的原理以及秦山二期工程一次和二次中子源组件的结构和特点。

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The device's primary source of neutron radiation was the radioactive element californium, but the stream of neutrons produced by the californium was multiplied by passing it through a lattice of highly enriched uranium U-235, whose nuclear fission released additional neutrons.

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