Perfecting

例句/造句/用法:

• It was exploited under the powerful patronage of a syndicate of newspaper men, and hundreds of thousands of dollars were spent in perfecting it before any practical results were obtained. Edward W. Byrn. 十九世紀發明進展.
• The plate is then returned to the engraving department, which completes the work, burnishing darks, engraving highlights, removing slight imperfections and otherwise perfecting the plate. 佚名. 神奇的知識之書.
• Edison in bringing out and perfecting his system of incandescent lighting. 弗蘭克·路易斯·戴爾. 愛迪生的生平和發明.
• He was very much occupied perfecting new commercial schemes, protecting his patents from a horde of pirates, and planning to introduce his invention into Europe. 魯伯特·薩金特·荷蘭. 歷史性發明.
• Henry had succeeded in perfecting the electromagnet, that dial and printing telegraphs were successfully produced. 威廉·亨利·杜利特. 世紀發明.
• Fourdrinier having expended ￡60,000 in perfecting the machine. 弗雷德里克·科利爾·貝克維爾. 偉大的事實.
• Prior to 1871, inventions in this art were mainly directed to perfecting the structure of this primary gin. 威廉·亨利·杜利特. 世紀發明.
• And the idea of perfecting an inner personality is a sure sign of social divisions. 約翰·杜威. 民主與教育.
• To-day it stands a triumph of human ingenuity, ranking in importance with the rotary web-perfecting press, and is probably the most ingenious piece of practical mechanism in existence. Edward W. Byrn. 十九世紀發明進展.
• One of the latest quadruple stereotype perfecting presses made by Hoe & Co. 威廉·亨利·杜利特. 世紀發明.
• Both logically and educationally, science is the perfecting of knowing, its last stage. 約翰·杜威. 民主與教育.

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