Term
J-GLOBAL ID:200906039050745686 

Thorium

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元素
Description(Wikipedia): Thorium is a chemical element with symbol Th and atomic number 90. A radioactive actinide metal, tho ...Read more at Wikipedia
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Terms compiled by the various academic associations and the Ministry of Education, Culture, Sports, Science and Technology.
  • 化学編(増訂2版) / トリウム / thorium
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