国外一些有核电的国家 ,如美、法、德、日等国 ,都在积极地开展深燃耗燃料元件的研究工作 ,其目标是延长燃料元件使用寿命、提高铀燃料利用率、降低燃料循环成本、降低核电成本。在开展此项研究试验工作中遴选出能经受物理、化学、机械、辐照、裂变气体等多方面作用的燃料元件 Some foreign countries with nuclear power, such as the United States, France, Germany, Japan and other countries, are actively carrying out research on deep-burn fuel components with the goal of extending the service life of fuel components, increasing uranium fuel utilization and reducing the fuel cycle Cost, reduce the cost of nuclear power. In carrying out the research work of this experiment, we can select the fuel element that can withstand many aspects such as physical, chemical, mechanical, irradiation, fission gas and so on