| 单词 | strontium-90 |
| 释义 | strontium /stronˈshi-əm, -shəm or stronˈti-əm/nounA yellow metallic element (symbol Sr; atomic no 38) found in celestite stronˈtia noun Its oxide stronˈtian /-shi-ən/ noun (loosely) strontium, strontia or strontianite stronˈtianite noun Its carbonate, an orthorhombic mineral (first found in 1790 near Strontian in NW Scotland) stronˈtium-90 noun A radioactive isotope of strontium, an important element in nuclear fallout strontium unit noun A measure of the concentration of strontium-90 in organic material (abbrev SU) |
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