单词 | prestress |
释义 | prestressn.adj. A. n. Stress applied to an object during manufacture or prior to some other treatment, usually in order to counteract applied loads. ΘΚΠ society > occupation and work > industry > manufacturing processes > [noun] > processing > types of preliminary processing grounding1466 roughing1743 preheating1898 pre-cooling1907 presoak1919 presoaking1919 premixing1927 prestress1934 pre-tension1936 pre-impregnation1937 pre-cutting1939 preloading1941 1934 Engin. News-Record 13 Sept. 345/1 A pre-stress of 8,392 lb. per sq. in. 1956 Archit. Rev. 119 146/3 Strips of shuttering supported on props..also support the precast units before the pre-stress is applied. 1977 Design Engin. July 64/1 Forces depend on prestress, i.e. initial deflection of spring, as well as direction of motion. 2004 Union Leader (Manchester, New Hampsh.) (Nexis) 17 Feb. b10 Fabric structures, constructed of elements that have little or no bending or shear stiffness (membranes and cables) rely on their form and internal prestress. B. adj. Linguistics. Occurring before a stressed syllable. ΘΚΠ the mind > language > linguistics > study of speech sound > speech sound > intonation, pitch, or stress > [adjective] > accent > stressed > with respect to group subtonic1827 pretonic1864 post-tonic1880 protonic1890 nuclear1937 prestress1941 post-nuclear1944 pre-nuclear1952 internuclear1958 1941 Jrnl. Amer. Oriental Soc. 61 145/2 Pre-stress vowel lengthening, consonant doubling, and vowel reduction. 1973 Word 1970 26 98 In the traditional analysis long vowels occur only under stress... Therefore, no prestress vowel may be long. 1975 Amer. Speech 1972 47 171 The sets of intersyllabic consonants and consonant clusters differ remarkably in different slots; for instance prestress /bh bt nk/ (as in abhór, obtáin, enquíre). 1985 Hispania 68 156/1 Examples of stressed, pre-stress, post-stress and final oral vowels. This entry has been updated (OED Third Edition, March 2007; most recently modified version published online March 2022). prestressv. transitive. To apply stress to (an object or material) during manufacture or prior to some other treatment, esp. so as to counteract applied loads; spec. to reinforce concrete with steel rods or wires which have been tensioned while the concrete is setting. Cf. prestressed adj. ΘΚΠ society > occupation and work > industry > building or constructing > build or construct [verb (transitive)] > compress, stretch, or tension components precompress1920 prestress1934 prestretch1936 pre-tension1936 post-stretch1941 post-tension1974 1934 Engin. News-Record 13 Sept. 345/1 The idea of destroying the bond between steel rods inserted in concrete, and prestressing the rods in tension and the concrete in compression, is not new. 1940 Concrete & Constructional Engin. 35 330/1 Thin piano wires, of a strength of 350,000 lb. to 450,000 lb. per square inch, are prestressed to a stress equivalent to half that of yield point. 1971 Materials & Technol. II. iv. 113 (caption) The vertical outer wall..was prestressed with Freyssinet cables. 2004 Financial Mail (Johannesburg) (Nexis) 3 Dec. 10 The Jackpot [device] prestresses timber mine props at the time of installation, and so provides an immediate, active support to the roof of the mine. Derivatives preˈstressing n. ΘΚΠ society > occupation and work > industry > building or constructing > [noun] > tensioning or stretching components prestressing1934 pre-tensioning1936 post-stretching1946 prestretching1946 post-tensioning1948 1934 Engin. News-Record 13 Sept. 345/1 One advantage of the prestressing is to postpone the formation of cracks. 1964 C. W. Glover Struct. Precast Concrete xix. 328 The basic idea of pre-stressing is to induce in the unloaded members stresses that are contrary to the stress normally produced by loading. 1992 Times Higher Educ. Suppl. 27 Mar. 26/5 Prestressing is little used in Britain, except for precast floor units. This entry has been updated (OED Third Edition, March 2007; most recently modified version published online March 2022). < n.adj.1934v.1934 |
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