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radioactive isotope deposition of this group decreased as the content in the environment increased rapidly. Among the first isotopes, the 40K potassium isotope occupies the dominant position in terms of the magnitude of the activity generated. The potassium content in plant organisms is 3 times less than the content in the earth's crust.

อ่านต่อได้ที่ โรงเรียนเทศบาลวัดไทรอารีรักษ์ (มณีวิทยา)
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