Core

(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 (computer science) a tiny ferrite toroid formerly used in a random access memory to store one bit of data; now superseded by semiconductor memories; 'each core has three wires passing through it, providing the means to select and detect the contents of each bit'.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

• The strength of any electromagnet depends upon the number of coils wound on the iron core and upon the strength of the current which is sent through the coils. 伯莎M.克拉克. 科学通论.
• The strength of a motor may be increased by replacing the singly coiled armature by one closely wound on an iron core; in some armatures there are thousands of turns of wire. 伯莎M.克拉克. 科学通论.
• The iron which is magnetized by the current passing around it is called the core. 佚名. 神奇的知识之书.
• Her heart's core. 夏洛蒂·勃朗特. 雪莉.
• Among the earliest of Edison's dynamo experiments were those relating to the core of the armature. 弗兰克·刘易斯·戴尔. 爱迪生的生平和发明.
• He split up the iron core of the armature into thin laminations, separated by paper, thus practically suppressing Foucault currents therein and resulting heating effect. 弗兰克·刘易斯·戴尔. 爱迪生的生平和发明.
• It must be borne in mind that the laboratory is only the core of a group of buildings devoted to production on a huge scale by hundreds of artisans. 弗兰克·刘易斯·戴尔. 爱迪生的生平和发明.
• During this travel the various cores are set, and the molds closed, moving to the point where the men with large ladles pour the mold. 佚名. 神奇的知识之书.
• Hanging over the top of the board are several cores on which the resistance wire has been wound, showing the V-shaped heating element. 佚名. 神奇的知识之书.
• SHOWING A BOX OF IMPORTED MICA Above on the table, a stack of cores and several elements ready for insertion in the iron. 佚名. 神奇的知识之书.
• At the edge of the table is a stack of mica strips known as cores. 佚名. 神奇的知识之书.
• These cores were then allowed to run in an excited field, and after a given time their temperature was measured and noted. 弗兰克·刘易斯·戴尔. 爱迪生的生平和发明.
• In the field magnets of his dynamo he constructed the cores and yoke of forged iron having a very large cross-section, which was a new thing in those days. 弗兰克·刘易斯·戴尔. 爱迪生的生平和发明.
• By such practical methods Edison found that the thin, laminated cores of sheet iron gave the least heat, and had the least amount of wasteful eddy currents. 弗兰克·刘易斯·戴尔. 爱迪生的生平和发明.

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