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Engineering: impermeability of casting, pressure-tightness of casting
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traditional ceramics — Introduction ceramic materials that are derived from common, naturally occurring raw materials such as clay minerals and quartz sand. Through industrial processes that have been practiced in some form for centuries, these materials are made … Universalium
Silicon — Not to be confused with the silicon containing synthetic polymer silicone. aluminium ← silicon → phosphorus C ↑ Si ↓ Ge … Wikipedia
dam — dam1 /dam/, n., v., dammed, damming. n. 1. a barrier to obstruct the flow of water, esp. one of earth, masonry, etc., built across a stream or river. 2. a body of water confined by a dam. 3. any barrier resembling a dam. v.t. 4. to furnish with a … Universalium
Dam — /dam, dahm/, n. (Carl Peter) Henrik /kahrl pee ter hen rik/; Dan. /kahrddl pay teuhrdd hen rddik/, 1895 1976, Danish biochemist: Nobel prize for medicine 1943. * * * I Barrier built across a stream, river, or estuary to conserve water for such… … Universalium
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