As Masurium, it was the first element discovered that occurs in nature only from spontaneous fission, and as Technetium, it was the first element discovered in a laboratory.

作为 Masurium，它是在自然界中发现的第一种只能通过自然裂变产生的元素；作为锝，它是在实验室中发现的第一种元素。

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The majority radioactive fission products of the spent fuel elements in high temperature gas-cooled reactor(HTGR) is contained in the fuel element.

高温气冷堆乏燃料元件的放射性裂变产物绝大部分滞留在燃料元件中。

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This paper presents the thermal analyses for steady state, depressurization and total loss of flow in the tokamak heliumcooling slab fuel element fusion-fission hybrid reactor.

本文对以托卡马克为聚变装置、氦气冷却板状元件包层的聚变-裂变混合堆进行了稳态、卸压和全厂断电断流的热工分析。

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Fusion is the process of forcing the nuclei of atoms so close together that they fuse into a nucleus of a new element. (Fission, of course, is the opposite: energy produced by splitting nuclei.) The new, fused nucleus weighs less than the original two.

FORBES: A Nuclear Hybrid