americium
noun [ U ] uk/ˌæm.əˈrɪs.i.əm/ us/ˌæm.əˈrɪs.i.əm/
(symbol Am)镅（一种放射性化学元素）
a chemical element that is a silver-white metal. It is radioactive and is used to make smoke detectors (= devices that make a loud noise when smoke is present)
tiny quantities of americium 极少量的镅
- More examples
- Two new drugs have been approved to treat radiation contamination due to plutonium, americium, or curium.
- Officials insist that the low levels of plutonium, americium and other man-made radioactive contaminants present in the groundwater pose no public health threat.