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单词 multigrade
释义

multigraden.adj.

Brit. /ˈmʌltɪɡreɪd/, U.S. /ˈməltiˌɡreɪd/; see also multi- comb. form.
Origin: Formed within English, by compounding. Etymons: multi- comb. form, grade n.
Etymology: < multi- comb. form + grade n.
A. n.
1. Photography. Usually in form Multigrade. A proprietary name for: a photographic paper for black and white prints that is coated with a mixture of emulsions of different grades which are sensitive to different wavelengths of light, so that the contrast of the prints can be varied according to the colour of the printing light used.
ΘΚΠ
society > leisure > the arts > visual arts > photography > photographic processes > processing and printing equipment > [noun] > paper
printing paper1593
photographic paper1840
gelatin paper1851
surface paper1851
print paper1858
Saxe paper1864
tissue1873
carbon paper1878
bromide paper1885
print-out paper1893
mezzotype1894
printing out paper1895
silver paper1898
gaslight paper1899
multigrade1940
contact sheet1959
1940 Amateur Photographer 22 May 442/1Multigrade’ is a new Ilford paper designed to enable the amateur to obtain half a dozen perfect prints, even from negatives of widely differing contrast, from..a single packet of paper.
1988 Camera Weekly 14 May 70/1 Multigrade has revolutionised the work of the photographic printer.
1990 Portfolio Mag. Summer 36/2 All aspects of the zone system covered from exposure to print using multigrade papers.
1997 Football Europe Aug. (back cover) (advt.) Printed by hand on high quality photographic multigrade matt paper.
2. Mathematics. A solution of a multigrade equation; such an equation.
ΚΠ
1971 Trans. Amer. Math. Soc. 159 285 By a multigrade of order m we mean two disjoint sets of integers..such that ∑ni = 1cik = ∑ni = 1dik for k = 1, 2, …, m.
1991 Math. of Computation 57 817 Letac's construction produces infinitely many genuinely different ideal 9th-order multigrades.
B. adj.
1. Logic. Of a relation: that can hold between varying numbers of terms. rare.
ΚΠ
1940 H. S. Leonard & N. Goodman in Jrnl. Symbolic Logic 5 50 The relation ‘met with’..may obtain between two people, among three, among four, and indeed among any number. Such a relation without any fixed degree may be called a ‘multigrade’ relation.
2. Mathematics. Designating a Diophantine equation of the form a1k + a2k + … + ank = b1k + b2k + … + bnk satisfied by two sets of integers, {a1, a2, … an} and {b1, b2, … bn}, for each of several given integer values of k.
ΚΠ
1947 Scripta Mathematica 13 187 (title) Universal magic squares and multigrade equations.
1971 Trans. Amer. Math. Soc. 159 286 If the multigrade equations x1,…, xn =my1,…, yn have any integer solution (which always happens..if n ≧ 2m − 1), [etc.].
1986 Amer. Math. Monthly 93 458 Consider the equation 1r + 4r + 4r = 2r + 2r + 5r. This is known as a multigrade equation; it holds for r = 0, 1, and 2.
3. Of engine oil: meeting the specification of several standard grades through having a viscosity that varies less with temperature than ordinary oil.
ΘΚΠ
society > occupation and work > materials > raw material > mineral material > mineral oil > [adjective] > type of mineral oil
sweet1919
multigrade1959
1959 Motor Man. (ed. 36) x. 237 The ‘multi-grade’ engine oils now available..cover a range of ratings.
1972 Materials & Technol. IV. ii. 68 Modern motor oils with good viscosity/temperature characteristics may meet the requirements of several SAE [sc. Society of Automotive Engineers] grades and are termed multigrade oils (e.g. 10W/30).
1974 Drive Autumn 56 Fast-moving engine parts ‘snip up’ ordinary multigrade oils like scissors.
1988 J. Gillis & T. Kelly Armchair Mech. iv. 76 Multi-grade oils, the most common of which is 10W–40.
4. Photography. Designating developing equipment for use with Multigrade paper.
ΚΠ
1982 J. H. Coote Monochrome Darkroom Pract. iv. 220 Multigrade filters range in colour from yellow to magenta, the yellow filters producing softer results while the magentas yield harder or more contrasty prints.
1987 Pract. Photogr. Dec. 112/1 (advt.) There is a choice of two black and white heads (tungsten or halogen), multigrade or full colour head and stabilised or unstabilised transformers.
1993 Photo Answers Jan. 23/1 This 16 piece kit includes a superb Kaiser VPM602 multigrade enlarger, which comes complete with..all the chemicals that you need.
This entry has been updated (OED Third Edition, March 2003; most recently modified version published online March 2022).
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n.adj.1940
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