| 释义 |
micrograph|ˈmaɪkrəʊgrɑːf, -æ-|
[f. micro- + -graph.]
1. A picture or photograph of greatly reduced size.
1874Draper Relig. & Sci. v. (1875) 134 In her [the Mind's] silent galleries are there hung micrographs of the living and the dead?
2. An instrument constructed for producing extremely minute writing or engraving (Knight Dict. Mech. 1875). Cf. micropantograph.
3. An enlarged image of an object (as seen through a microscope) obtained either by hand drawing or (now more usu.) photographically.
1904Electrochem. Ind. Mar. 88/2 This embodies..the determination of oxygen content, the preparation of micrographs, and..the planimetric measurements of enlarged micrographs, with calculation of the percentage of oxygen. 1916Trans. Amer. Inst. Mining & Metall. Engin. LI. 832 A microscopic examination was made of the threaded end of each of the 108 tensile bars. The micrographs shown at the end of this report reproduce the average structure of the top and bottom tensile bars. Ibid. 833 All micrographs are magnified 100 diameters. 1941R. M. Allen Photomicrogr. i. 1 The word micrograph used alone has had to be broadened in meaning to include pictures of minute objects either drawn by hand or produced through photographic processes. 1953Jrnl. Appl. Physics XXIV. 616/1 The simplest method of obtaining x-ray micrographs is to place the specimen in contact with a photographic film of the maximum resolution type and expose it to the radiation from a normal x-ray tube. All the enlargement is obtained photographically. 1960D. F. Lawson Technique Photomicrogr. ii. 4 Drawings made from images projected from a microscope are referred to as micrographs. 1968H. Harris Nucleus & Cytoplasm iii. 59 Some electron micrographs of isolated ‘polysomes’ also appeared to show the ribosomes connected by some form of strand. |