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radioactive material
Sufficient caution is necessary when handling radioactive materials.
chemical equivalent
The concept of chemical equivalent is essential for understanding chemical reactions.
(chemistry) fine chemical
My company specializes in the manufacture of fine chemicals.
stoichiometry
Stoichiometry is a method for calculating the amount of substances in a chemical reaction.
"chemical flavoring", any umami flavoring agent, usually MSG
No chemical flavoring is used in this ramen at all.
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