1. a radioactive transuranic element; discovered by bombarding americium with helium. 一种放射性超铀元素,用中子轰击钚时产生。
2. a radioactive transuranic element; discovered by bombarding americium with helium. 一种放射性超铀元素,在用氦轰击镅时发现。
3. Many American households have as much as a milligram of radioactive americium-241 in the various smoke alarms and other gas-phase detectors found there. 在许多美国家庭中,科学家发现各种各样烟雾报警器以及其它气相探测器中存在高达1毫克的放射性镅-241。
英英解释
n.
1. a radioactive transuranic metallic element; discovered by bombarding uranium with helium atoms