At present, radioactive substances and radiation has been used different jobs, such as in medical use in the treatment of disease, diagnosis and symptoms of illness from bad diseases such as brain x-ray detected radiation detection of bone. Etc. In addition, it has been used by industrial enterprises in. Agricultural scientific research and education, such as using a radiation monitor cracked welds in metallic parts, using labels, glow in the dark. Food preservation by radiation and disinfection in medical instruments
.The dangers of radiation.
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