潜在问题的程度正越来越清晰：31个国家已经在运转大型核能反应堆，其中一些国家将继续增加。
The scale of the potential problem is getting clearer: 31 countries already operate large nuclear-power reactors, and some of those will be adding more.
科学家一直在寻找更简单的方法制造名为浓缩铀的昂贵材料- - - - - -核反应堆和炸弹的燃料，现在只在大型工厂生产。
Scientists have long sought easier ways to make the costly material known as enriched uranium - the fuel of nuclear reactors and bombs, now produced only in giant industrial plants.
但是核武化的纯核聚变反应堆将配备小型激光器和目前被用于建设大型设备的其他触发技术。
But weaponized pure fusion would require miniaturizing lasers or other trigger technologies that currently involve building-sized equipment.
中国原子能科学研究院实验快堆工程部总工程师徐说，2012- 2013年，中国将开始利用自主研发的“第四代”技术，建造中国首个大型核电反应堆。
China will start building its first large nuclear-power reactor with home-developed 'fourth generation' technology in 2012-13, a senior engineer involved in developing the system said.
他是我国第一代大型核反应堆工厂施工图主要设计人之一。
Cai is one of the chief designers of construction drawings for large-scale nuclear reactor factory of the first generation.
平行通道流动不稳定性的问题是影响各种大型电站锅炉和反应堆系统安全运行的重要因素之一。
Flow instability in parallel channels is one of the important factors that affect operation safety of all large-capacity power boilers and nuclear reactor systems.
大体积混凝土主要用在大坝、反应堆体、高层建筑深基础底板以及大型设备基础结构。
The big physical volume concrete mainly uses in the big dam and responds a body, the foundation scaleboard of high building deep and large equipments foundation structure.
大体积混凝土主要用在大坝、反应堆体、高层建筑深基础底板以及大型设备基础结构。
The big physical volume concrete mainly uses in the big dam and responds a body, the foundation scaleboard of high building deep and large equipments foundation structure.
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