| polychlorinated biphenyls |
a group of synthetic, toxic industrial chemical compounds once used in making paint and electrical transformers, which are chemically inert and not biodegradable. PCBs were frequently found in industrial wastes, and subsequently found their way into surface and ground waters. As a result of their persistence, they tend to accumulate in the environment. In terms of streams and rivers, PCBs are drawn to sediment, to which they attach and can remain virtually indefinitely. ...
출처: mvhs1.mbhs.edu/riverweb/glossary.html
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| polycarbonate |
Extremely impact resistant material, with excellent weathering and heat resistance up to 250 degrees F and high clarity.
출처: www.northsafety.com/usa/en/bs_home.html
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| polycarbonate |
A thermo-plastic material that is used to mould CD and DVD discs. It can be injection moulded and has the necessary mechanical and optical properties.
출처: www.multimediadirector.com/help/technology/glossar...
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| polychemotherapy |
Treatment with several chemotherapeutic agents at once.
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| polychromatic erythrocyte |
An RBC that does not stain uniformly.
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