放射卫生防护中的术语。指辐射源失去控制，使工作人员和公共受到超过为他们所规定的正常情况下剂量当量的照射。如事故照射和应急照射。
如今，从五月中旬开始一直到九月中旬，只要一晴天，阳光就异常灼热，大街上的沥青在强光照射下蒸腾起滚滚热浪，中间夹杂着一股烧焦味。
Nowadays, from the mid- May to the mid- September, the sunlight would become scorching so long as it is fine. The pitch under the sun would generate surging heat waves smelling tar on the streets.
目的探讨胚胎期X线照射引起大鼠皮质内异常结构的形成机理。
Objective To explore the abnormalities of the developing cerebral cortex in rats caused by prenatal X-ray irradiation.
应用推荐