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机译:在其他地方改善思想

摘要

Nuclear fuel element comprises a central core of nuclear fuel, partic. UO2 opt. mixed with PuO2, and an elongated composite sheath consisting of a substrate, partic. a Zr-alloy, with a protective layer on its inner surface of a matl. selected from alloys incorporating Cr resistant to oxidn., partic. stainless steel of high Cr content, a Cr-contg. coating, an Al-contg. coating or a silicon-contg. coating alloyed with the substrate. Protects the substrate from corrosion by fission prods. or attack by irradiated impurities or their decompsn. prods. The tubular fuel element has a free space at its upper end for the reception of a helical element e.g. a spring, for retaining the nuclear fuel tablets e.g. of UO2, in posn.
机译:核燃料元件包括特定的核燃料中心核。 UO2选择。与PuO2混合,以及由基质(一部分)组成的细长复合护套。 Zr合金,在其内表面上具有保护层。选自包含抗氧化铬的合金。高铬含量的不锈钢,含铬量高。涂层,含铝。涂层或含硅的。与基材合金化的涂层。保护基材不受裂变棒腐蚀。或被辐照的杂质或其分解物侵蚀。产品。管状燃料元件在其上端具有自由空间,用于容纳螺旋形元件,例如螺旋形。弹簧,用于保留核燃料片,例如UO2(以posn为单位)。

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