At the other extreme, a star whose mass is too great will become so hot as a result of accelerated nuclear reaction . 另一极端方面,质量过大的恒星将会由于加快了原子核反应而变得很热。
Artificially induced nuclear reaction 人工诱导原子核反应
Using carbon - dating techniques , archaeologists can determine the age of many ancient objects by measurement the amount of radioactive carbon they contain 参考译文:在太阳深处的内核中,氦和氢经过一系列高热原子核反应熔合作用产生了太阳的能量。
Equipment capable of producing ionizing radiation refers to the equipment apart from nuclear reactor facilities capable of producing ionizing radiation by such means as electromagnetic fields , or nuclear reactions 四可发生游离辐射设备:指核子反应器设施以外,用电磁场、原子核反应等方法,产生游离辐射之设备。