Electromagnet

例句:

• The poles of the electromagnet in the local circuit are hollowed out and filled up with carbon disks or powdered plumbago. 弗兰克·刘易斯·戴尔. 爱迪生的生平和发明.
• 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.
• When one talks into a receiver, _L_, the voice throws into vibration a sensitive iron plate standing before an electromagnet. 伯莎M.克拉克. 科学通论.
• This brings us to the gist of the ingenious way in which Edison substituted the action of electrochemical decomposition for that of the electromagnet to operate a relay. 弗兰克·刘易斯·戴尔. 爱迪生的生平和发明.
• The back and forth motion of the iron plate induces current in the electromagnet _c_. 伯莎M.克拉克. 科学通论.
• A horseshoe electromagnet is powerful enough to support heavy weights. 伯莎M.克拉克. 科学通论.
• This is usually done by installing at each station a local battery and a very delicate and sensitive electromagnet called the _relay_. 伯莎M.克拉克. 科学通论.
• This device is known as an electromagnet, and the charging and discharging of such a magnet may, of course, be repeated indefinitely. 弗兰克·刘易斯·戴尔. 爱迪生的生平和发明.
• Henry had succeeded in perfecting the electromagnet, that dial and printing telegraphs were successfully produced. 威廉·亨利·杜利特. 世纪发明.
• It is thus attracted toward an adjacent electromagnet when cold and is uninfluenced when hot, and as the result motion is produced. 弗兰克·刘易斯·戴尔. 爱迪生的生平和发明.
• An essential part of this relay consists of a swinging PERMANENT magnet, C, whose polarity remains fixed, that end between the terminals of the electromagnet being a north pole. 弗兰克·刘易斯·戴尔. 爱迪生的生平和发明.
• This consists of an electromagnet, T, operated by a key, K, and separate battery. 弗兰克·刘易斯·戴尔. 爱迪生的生平和发明.
• The ringing of the electric bell is due to the attractive power of an electromagnet. 伯莎M.克拉克. 科学通论.
• As soon as the current ceases to flow, the electromagnet loses its magnetic power and becomes merely iron and wire without magnetic attraction. 伯莎M.克拉克. 科学通论.
• Such an arrangement is called an electromagnet. 伯莎M.克拉克. 科学通论.
• It will be understood that electromagnets were the ticker's actuating agency. 弗兰克·刘易斯·戴尔. 爱迪生的生平和发明.
• In a shunt circuit with the receiving instrument he introduced electromagnets. 弗兰克·刘易斯·戴尔. 爱迪生的生平和发明.
• In such an arrangement there is practically the strength of two separate electromagnets. 伯莎M.克拉克. 科学通论.
• Electromagnets are used in place of simple magnets, and the armature, instead of being a simple coil, may be made up of many coils wound on soft iron. 伯莎M.克拉克. 科学通论.
• The strongest known magnets are electromagnets, which, as we have seen, are merely coils of wire wound on an iron core. 伯莎M.克拉克. 科学通论.
• The electromagnets and other actuating mechanism cannot be seen plainly in this figure, but are produced diagrammatically in Fig. 2, and somewhat enlarged for convenience of explanation. 弗兰克·刘易斯·戴尔. 爱迪生的生平和发明.

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