(noun.) a bar of magnetic material (as soft iron) that passes through a coil and serves to increase the inductance of the coil.
(noun.) the chamber of a nuclear reactor containing the fissile material where the reaction takes place.
(noun.) (computer science) a tiny ferrite toroid formerly used in a random access memory to store one bit of data; now superseded by semiconductor memories; 'each core has three wires passing through it, providing the means to select and detect the contents of each bit'.
(noun.) a small group of indispensable persons or things; 'five periodicals make up the core of their publishing program'.
(noun.) the center of an object; 'the ball has a titanium core'.
(noun.) the central part of the Earth.
(noun.) a cylindrical sample of soil or rock obtained with a hollow drill.
(verb.) remove the core or center from; 'core an apple'.
录入:梅利特
芭芭拉校对