| polychlorinated biphenyls |
A group of toxic chemicals. These are used for industrial products such as fluorescent lights and electrical transformers. They are very poisonous. They are not easily biodegradable and can remain in our environment for hundreds of years.
출처: www.lalc.k12.ca.us/target/units/recycle/activities...
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| polychlorinated biphenyls |
A class of organic compounds used in a variety of industrial applications, including as insulation fluids in electrical transformers; EPA has classified most PCBs as human carcinogens.
출처: www.sric.org/voices/2000/v1n2/glossary.html
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