I hadn't any particular work to give him, but I had a number of small induction coils, and to give him something to do I told him to fix them up and sell them among his sailor friends. 弗兰克·刘易斯·戴尔.爱迪生的生平和发明.
As soon as the current flows, the coils become magnetic and attract the soft iron armature, drawing it forward and causing the clapper to strike the bell. 伯莎M.克拉克.科学通论.
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.
These coils were then annealed or softened and placed in a heap. 佚名.神奇的知识之书.
The relay coils are connected by wire to the spring piece, S, and the armature lever is connected to earth. 弗兰克·刘易斯·戴尔.爱迪生的生平和发明.
The artificial line, as well as that to which the two coils are joined, are connected to earth. 弗兰克·刘易斯·戴尔.爱迪生的生平和发明.
Just as the coils and braids of dark-brown hair had been set free, Sir James entered the room. 乔治·艾略特.米德尔马契.
At his side was the hunting knife of his unknown sire, and across his shoulders the coils of his own long rope. 埃德加·赖斯·巴勒斯.人猿泰山.
By those coils of rope up there you can escape down the face of the cliff? 弗格斯·休姆.奇幻岛.
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.
These open-coil grills are also very efficient as toasters, the bread being placed on top of the grating, which protects the coils from injury. 佚名.神奇的知识之书.
Nearer and nearer she came to where Tarzan of the Apes crouched upon his limb, the coils of his long rope poised ready in his hand. 埃德加·赖斯·巴勒斯.人猿泰山.
The coils offer so much resistance to the passage of a strong current through them that they become heated and warm the cars. 伯莎M.克拉克.科学通论.
But the attractive, magnetic power of the coils stops as soon as the current ceases; hence there is nothing to hold the armature down, and it flies back to its former position. 伯莎M.克拉克.科学通论.
The current sent through our electric stoves and irons should be strong enough to heat the coils, but not strong enough to melt them. 伯莎M.克拉克.科学通论.
The relay at each end has two coils, 1 and 2, No. 弗兰克·刘易斯·戴尔.爱迪生的生平和发明.
The heating element is of the open-coil reflector type and is so placed in the frame that cooking can be done both above and below the glowing coils at the same time. 佚名.神奇的知识之书.
A switch in the armature circuit enabled the motorman to reverse the direction of travel by reversing the current flow through the armature coils. 弗兰克·刘易斯·戴尔.爱迪生的生平和发明.
For example, trolley cars are heated by coils of wire under the seats. 伯莎M.克拉克.科学通论.
He was convulsed in the clasp of this death of his father's, as in the coils of the great serpent of Laocoon. 戴维·赫伯特·劳伦斯.恋爱中的女人.
Where only chops, toast, and coffee are to be had for breakfast, chops can be prepared below the coils, the toast above, while the coffee gurgle-gurgles in the percolator. 佚名.神奇的知识之书.
When the key is depressed, current flows through the relay coils at A, but no magnetism is produced, as they oppose each other. 弗兰克·刘易斯·戴尔.爱迪生的生平和发明.
Another special instrument is a dead beat galvanometer which differs from the ordinary form of galvanometer in having no coils or magnetic needle. 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.
The bell was ringing, and the Serpent was a Serpent of many coils, and the Elephant was getting ready. 查尔斯·狄更斯.艰难时事.
This particular grill is furnished with three dishes, any one of which can be used either above or below the coils. 佚名.神奇的知识之书.
This armature consists of coils or bobbins of insulated wire, each section having its terminals connected with separate insulated plates on the hub, which plates are known as the commutator. Edward W. Byrn.十九世纪发明进展.
During this period the pins were made with two coils of wire fastened at one end of a length of wire, the other end of which was sharpened. 佚名.神奇的知识之书.
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 revolving coils of the dynamo are called the armature, and the fixed electro-magnets are called the field magnets, and these latter may be two or more in number. Edward W. Byrn.十九世纪发明进展.