Category:ja:Radioactivity
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Japanese terms related to radioactivity.
NOTE: This is a "related-to" category. It should contain terms directly related to radioactivity. Please do not include terms that merely have a tangential connection to radioactivity. Be aware that terms for types or instances of this topic often go in a separate category.
Subcategories
This category has the following 2 subcategories, out of 2 total.