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单词 strontium
释义 strontium
 —strontic /stron"tik/,  adj.  
 /stron"shee euhm, -sheuhm, -tee euhm/, n. Chem.
 a bivalent, metallic element whose compounds resemble those of calcium, found in nature only in the combined state, as in strontianite: used in fireworks, flares, and tracer bullets. Symbol: Sr; at. wt.: 87.62; at. no.: 38; sp. gr.: 2.6.
 [1800-10; STRONT(IA) + -IUM]
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