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单词 filar
例句 filar
To Bouguer in 1748 is due the true conception of measurement by double image without the auxiliary aid of a filar micrometer, viz. by changing the distance between two object-glasses of equal focus. Encyclopaedia Britannica, 11th Edition, Volume 13, Slice 2 "Hearing" to "Helmond" 2012-04-25T02:00:53.567Z
According to Prof. Skeat it is derived from the Span. filigrana, from “filar, to spin, and grano, the grain or principal fibre of the material.” Encyclopaedia Britannica, 11th Edition, Volume 10, Slice 3 "Fenton, Edward" to "Finistere" 2011-03-14T03:01:00.580Z
Place the filar micrometer and the stage micrometer in their respective positions. The Elements of Bacteriological Technique A Laboratory Guide for Medical, Dental, and Technical Students. Second Edition Rewritten and Enlarged.
The method of observing which Brünnow employed was quite different from that of Struve, though the filar micrometer was used in both cases. The Story of the Heavens
For several thousand years the stars have been called "fixed," but the fine rulings of the filar micrometer tell a different story. Scientific American Supplement, No. 288, July 9, 1881
Rotate the screw of the filar micrometer until the movable wire coincides with the fixed one, and the index marks zero on the drum head. The Elements of Bacteriological Technique A Laboratory Guide for Medical, Dental, and Technical Students. Second Edition Rewritten and Enlarged.
In the filar micrometer two spider lines are parallel, and one intersects them at right angles. The Story of the Heavens
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