The study of apparatus for obtaining more perfect vacua was unceasingly carried on, for Edison realized that in this there lay a potent factor of ultimate success. 弗兰克·刘易斯·戴尔.爱迪生的生平和发明.
The laryngoscope, for obtaining a view of the larynx, was said to have been constructed by Mr. John Avery, of London, as early as 1846. Edward W. Byrn.十九世纪发明进展.
There had been great delay in obtaining the authority of Congress for the raising of the troops asked for by the administration. 尤利西斯·格兰特.U.S.格兰特的个人回忆录.
The impossibility of obtaining a uniform concentrate was a most serious objection, had there not indeed been other difficulties which rendered this method commercially impracticable. 弗兰克·刘易斯·戴尔.爱迪生的生平和发明.
To have served an apprenticeship in the town, under a master properly qualified, is commonly the necessary requisite for obtaining this freedom. 亚当·斯密.国富论.
Every possibility of good was before me, and the first of blessings secured, in obtaining her promises of faith and correspondence. 简·奥斯汀.爱玛.
Dr. Koch, who had srved in the Franco-Prussian War, succeeded in 1876 in obtaining pure cultures of this bacillus and in defining its relation to the dis ease. 李贝.西洋科学史.
Therefore more time had to be spent in obtaining an extension of the patent. 鲁伯特·萨金特·荷兰.历史性发明.
In the metallurgy of the precious metals probably the most important step has been the _cyanide process_ of obtaining gold and silver. Edward W. Byrn.十九世纪发明进展.
The strength of the solution was regulated by first obtaining a saturated solution of the nitrate of silver, and afterwards diluting it with six or eight times its volume of water. 弗雷德里克·科利尔·贝克维尔.伟大的事实.
While in England in 1837-1840, obtaining a patent on and introducing a circular saw, he became interested in the printing presses of the London Times. 威廉·亨利·杜利特.世纪发明.
In applying them for the purpose of obtaining instantaneous light, they were mixed together in an adhesive menstruum, into which the ends of small rectangular matches were dipped. 弗雷德里克·科利尔·贝克维尔.伟大的事实.
DEAR SON,--I have ever had a pleasure in obtaining any little anecdotes of my ancestors. 本杰明·富兰克林.富兰克林自传.
The general way of obtaining salt from the earth is by means of salt wells. 佚名.神奇的知识之书.
The difficulty of obtaining good electrical contact in the positive element was indeed Edison's chief trouble for many years. 弗兰克·刘易斯·戴尔.爱迪生的生平和发明.