Core sample
Код 3192094
- ISBN: 978-5-5138-9450-6
Код 3192094
High Quality Content by WIKIPEDIA articles! A core sample is a cylindrical section of (usually) a naturally occurring substance. Most core samples are obtained by drilling with special drills into the substance, for example sediment or rock, with a hollow steel tube called a core drill. The hole made for the core sample is called the "core hole". A variety of core samplers exist to sample different media under different conditions. More continue to be invented on a regular basis. In the coring...
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