Of the species which do change, only a few within the same country change at the same time; and all modifications are slowly effected. 查尔斯·达尔文.物种起源.
Subsequent changes involved the rotating of the cylinder instead of the wheels and many modifications in the form of the wheels. 威廉·亨利·杜利特.世纪发明.
This style of spoon was continued, with modifications, through the first third of the eighteenth century. 佚名.神奇的知识之书.
Various modifications have been made in the hydraulic forms. 威廉·亨利·杜利特.世纪发明.
There have been several modifications of Mr. Morse's telegraph, for the purpose of increasing the rapidity of its action and the distinctness of the marks. 弗雷德里克·科利尔·贝克维尔.伟大的事实.
Its distinguishing features are certain modifications in the distribution of the mass of protective armor of the ship. 佚名.神奇的知识之书.
But all machines, however complicated in appearance, are in reality but modifications and combinations of one or more of four simple machines devised long ago by our remote ancestors. 伯莎M.克拉克.科学通论.
The same tendencies apply with some modifications to the clothing of mankind. 佚名.神奇的知识之书.
Many Inventions and Modifications Resulting in a Wonderful Evolution. 威廉·亨利·杜利特.世纪发明.
Homoplastic structures are the same with those which I have classed, though in a very imperfect manner, as analogous modifications or resemblances. 查尔斯·达尔文.物种起源.
Cogwheels are modifications of the wheel and axle. 伯莎M.克拉克.科学通论.
Subsequently one of these ideas, with modifications suggested by some of the others, was put into successful practice. 弗兰克·刘易斯·戴尔.爱迪生的生平和发明.
These primary qualities are extension and solidity, with their different mixtures and modifications; figure, motion, gravity, and cohesion. 戴维·休谟.人性论.
We are least likely in the modifications of these organs to mistake a merely adaptive for an essential character. 查尔斯·达尔文.物种起源.
The Evans system, with minor modifications and improvements, was the prevailing one for three-quarters of a century. 威廉·亨利·杜利特.世纪发明.
The results of the working of that experimental ship were so satisfactory, that other ships were soon built, with modifications of the form of the propeller. 弗雷德里克·科利尔·贝克维尔.伟大的事实.
The Albert-type and Woodbury-type are early modifications of this art. Edward W. Byrn.十九世纪发明进展.
The battery itself soon underwent modifications, and new types were evolved--the storage, the double-fluid, and the dry. 弗兰克·刘易斯·戴尔.爱迪生的生平和发明.
Besides the regular typewriters, various modifications have been made to suit special kinds of work. Edward W. Byrn.十九世纪发明进展.
The phonograph and its modifications depend alone on sound waves--the recording of the waves from one vibrating membrane and their exact reproduction on another vibrating membrane. 威廉·亨利·杜利特.世纪发明.
Many modifications of this gun have been made by Hotchkiss and others. Edward W. Byrn.十九世纪发明进展.
Modifications in hard parts and in external parts sometimes affect softer and internal parts. 查尔斯·达尔文.物种起源.
In some cases we might easily put down to disuse modifications of structure which are wholly, or mainly due to natural selection. 查尔斯·达尔文.物种起源.
As the art of telegraphy grows apace toward the end of the Nineteenth Century, individuality of invention becomes lost in the great maze of modifications, ramifications, and combinations. Edward W. Byrn.十九世纪发明进展.