| 释义 |
DictionarySeecorecoring
coring[′kȯr·iŋ] (metallurgy) 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. (petroleum engineering) 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. coringRemoving a core from a concrete structure or rock foundation, for test purposes.coringA 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.coring
coring (kăwr′ĭng) [ME.] The operative removal of a plug or wedge of tissue (e.g., with a hollow surgical instrument). |