Magnets

例句:

• Safety clutches are numerous, by which the machine is quickly and automatically stopped by the action of electro-magnets should a workman or other obstruction be caught in the machinery. 威廉·亨利·杜利特. 世纪发明.
• His knowledge of magnets was tremendous. 弗兰克·刘易斯·戴尔. 爱迪生的生平和发明.
• Since Oersted’s first electric magnet in 1820, electric magnets have been made in a variety of forms and for many different purposes. 佚名. 神奇的知识之书.
• The magnets used in this river work were three and one-half feet in diameter. 佚名. 神奇的知识之书.
• Inside that bar there are several permanent magnets, packed on each side of the ends of the coil of wire, the poles of those on one side being the opposite of those on the other. 弗雷德里克·科利尔·贝克维尔. 伟大的事实.
• It was of circular form, incased in iron, with the ends of several small magnets sticking through the floor. 弗兰克·刘易斯·戴尔. 爱迪生的生平和发明.
• The blow broke the glass carboy, and the acid ran down upon the field magnets of the dynamo, destroying the windings of one of the twelve magnets. 弗兰克·刘易斯·戴尔. 爱迪生的生平和发明.
• The mode now generally employed to correct deviation is by introducing on board ship masses of iron and magnets to neutralize the action of the ship’s magnetism so far as possible. 佚名. 神奇的知识之书.
• Set going under adequate conditions they are magnets for gathering and retaining an indefinitely wide scope of intellectual considerations. 约翰·杜威. 民主与教育.
• The field magnets in the multipolar machine usually are arranged in radial position around the entire circumference of the revolving armature, and are held in a fixed circular frame. Edward W. Byrn. 十九世纪发明进展.
• They are operated by means of enormous magnets which are suspended at the top of the shaft. 埃德加·赖斯·巴勒斯. 火星战神.
• Both of these machines had permanent field magnets, and were early types of magneto-electric machines. Edward W. Byrn. 十九世纪发明进展.
• In this illustration, the circuit, it will be seen, passes through both the coils of the field magnets and the coils of the armature, involving the principle of mutual excitation. Edward W. Byrn. 十九世纪发明进展.
• Thus two men and two magnets did the work of twenty-eight men in less than one-fourth of the time. 佚名. 神奇的知识之书.
• It has been said that although Oersted was the discoverer of electro-magnetism and Ampère its expounder, Faraday made the science of magnets electrically what it is at the present day. 威廉·亨利·杜利特. 世纪发明.
• He observed the actions of magnets, and conjectured the fundamental identity of magnetism and electricity. 威廉·亨利·杜利特. 世纪发明.
• I had to devise a way of raising the voltage without changing the machine, which I did by adding extra magnets. 弗兰克·刘易斯·戴尔. 爱迪生的生平和发明.
• All magnets have two poles, north and south. 弗兰克·刘易斯·戴尔. 爱迪生的生平和发明.
• The main facts relative to magnets may be summed up as follows:-- _a_. 伯莎M.克拉克. 科学通论.
• Below the eight-inch magnets the dust is blown out of the particles mechanically, and they then go to the four-inch magnets for final cleansing and separation. 弗兰克·刘易斯·戴尔. 爱迪生的生平和发明.
• All magnets, whether natural, permanent or electric, possess the same magnetic properties. 佚名. 神奇的知识之书.
• 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.
• In the illustration, Figs. 18 and 19, _a_ is a revolving wheel bearing the armature coils, _C_ permanent magnets, _d_ electro-magnets (field magnets), and _g_ the commutator. Edward W. Byrn. 十九世纪发明进展.
• Several horse-shoe magnets are attached to two endless chains, moving over suitable wheels, and inclined at an angle of 30 degrees. 弗雷德里克·科利尔·贝克维尔. 伟大的事实.
• There are three primary kinds of magnets: the lodestone or natural magnets, the artificial or permanent steel magnet, and the electric magnet. 佚名. 神奇的知识之书.
• Whatever is fine enough goes through to the eight-inch magnets, and the remainder goes back for recrushing. 弗兰克·刘易斯·戴尔. 爱迪生的生平和发明.
• These magnets deflect the fall of the particles rich in iron (which are attracted), while the non-magnetic particles of sand drop straight down. Edward W. Byrn. 十九世纪发明进展.
• And in the same year and in 1830 he produced those powerful magnets through which the energy of a galvanic battery was used to lift hundreds of tons of weight. 威廉·亨利·杜利特. 世纪发明.
• Electro-magnets are usually much more powerful than other magnets of the same size. 佚名. 神奇的知识之书.
• The Influence of Magnets upon Each Other. 伯莎M.克拉克. 科学通论.

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