英语词汇“h and d”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

H. and D. n. (see quots. 1918, 1930 for h. n.).

1903 A. Watkins Photogr. (ed. 2) 29 A box of one maker's plates marked H & D 100.

1918 Photo-miniature Mar. (Gloss.) H. & D. (Hurter and Driffield)—used as a prefix to numbers signifying the speed of plates measured by the system devised by these investigators. Fastest plates, H. & D. 400 to 500.

1930 Sel. Gloss. Motion Picture Techncian (Acad. Motion Pictures, Hollywood) H and D curve, the characteristic curve of a photographic emulsion.

单词	h and d
释义	> as lemmas H. and D. H. and D. n. (see quots. 1918, 1930 for h. n.). Π 1903 A. Watkins Photogr. (ed. 2) 29 A box of one maker's plates marked H & D 100. 1918 Photo-miniature Mar. (Gloss.) H. & D. (Hurter and Driffield)—used as a prefix to numbers signifying the speed of plates measured by the system devised by these investigators. Fastest plates, H. & D. 400 to 500. 1930 Sel. Gloss. Motion Picture Techncian (Acad. Motion Pictures, Hollywood) H and D curve, the characteristic curve of a photographic emulsion. extracted from Hn. < as lemmas
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> as lemmas