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Related to coring: diamond coring
A variable composition of individual crystals across a casting, due to nonequilibrium growth over a range of temperature; the purest material is near the center.
The use of a core barrel (hollow length of tubing) to take samples from the underground formation during the drilling operation; used for core analysis.
Removing a core from a concrete structure or rock foundation, for test purposes.
A phenomenon that occurs in some oil coolers at low atmospheric temperatures when the oil congeals and restricts the flow through the cooler. If this happens, a rise in oil temperature will take place without a corresponding rise in coolant or cylinder head temperature. In this case, the RPM should be increased and/or the shutters closed.