单词 | welded |
释义 | weldedadj. 1. a. United by welding. ΘΚΠ society > occupation and work > materials > derived or manufactured material > metal > metal in specific state or form > [adjective] > welded shot1810 welded1869 1869 Scientific Opinion 10 Feb. 270/1 The wire had been drawn from welded palladium. 1905 Westm. Gaz. 27 June 2/1 The immensely expensive welded-iron gun to which Sir W. Armstrong was wedded. b. transferred and figurative. ΘΚΠ the world > relative properties > wholeness > mutual relation of parts to whole > fact or action of being joined or joining > [adjective] > closely, intimately, or permanently joined grafted1570 married1599 soldered1601 connubial1807 Siamesed1833 welded1837 wedded1842 cemented1903 1837 F. Palgrave Merchant & Friar (1844) Ded. 4 The welded mass of haut ton, or low ton. 1862 E. Bulwer-Lytton Strange Story I. xxiii. 159 The welded strength of its sinews was best shown in the lightness and grace of its movements. 1878 R. Browning Poets Croisic lxxi Welded lines with clinch Of ending word and word. 1898 T. C. Allbutt et al. Syst. Med. V. 1008 The firm, thick, fibrous septum of the welded valve-structures. 2. welded joint n. = welted joint n. at welted adj. 4. ΘΚΠ society > occupation and work > industry > conducting of water, etc., by channels or pipes > plumbing and pipework > [noun] > specific joints spigot-joint1875 thimble-joint1877 welded joint1882 welted joint1888 1882 W. J. Christy Pract. Treat. Joints 197 This variety [of overlapping joint] thus compactly rolled together is otherwise termed a welded joint. 3. Geology. a. Applied to pyroclastic rock formed by the union of small, heat-softened particles. ΘΚΠ the world > the earth > structure of the earth > constituent materials > rock > composite rock > [adjective] > welded by heat welded1909 the world > the earth > structure of the earth > constituent materials > rock > igneous rock > [adjective] > volcanic > volcaniclastic > welded welded1909 1802 J. Playfair Illustr. Huttonian Theory 283 The line of separation..has, on the whole, been marked out with great precision; and, though the stones have been firmly united, or, as one may say, welded one upon another, yet, when a fresh fracture was obtained, the stratified and unstratified parts have rarely failed to be distinguished. 1899 J. P. Iddings in A. Hague et al. Geol. Yellowstone Nat. Park ii. x. 406 The mass is compact of glass, but it consists of irregularly shaped streaks and patches of different color. These twist and curve about one another and appear like a perfectly welded mass of strips or ribbons and irregular fragments of variously colored glass.] 1909 J. P. Iddings Igneous Rocks I. i. viii. 333 These examples of welded pumice are from rhyolitic lavas in the Yellowstone National Park. 1935 Trans. Amer. Geophysical Union 309 Although commonly and perhaps generally associated with deposits of light~colored volcanic ash of rhyolitic composition, the welded tuff is not confined to this association but occurs also on older rocks. 1962 E. A. Vincent tr. A. Rittmann Volcanoes ii. 80 Ignimbrites, or welded tuffs, are formed in enormous quantities from overflowing glowing clouds in fissure eruptions of very acid magmas. The incandescent ash particles are intimately fused to one another and attain a largely pseudoliquid state, especially in the deeper portions of the deposit, so that the massive rock which results often shows columnar jointing and is easily confused with a rhyolitic lava. 1970 Nature 12 Sept. 1125/1 This..is matched in volume only by the large welded tuff sheets of the central North Island of New Zealand, the type locality for ignimbrite. 1977 A. Hallam Planet Earth 74/1 There may also be intercalations of submarine pillow lavas or welded tuffs indicative of volcanic islands. b. Applied to an intimate, close-fitting contact between two bodies of rock that have not been heat-softened or tectonically disrupted. ΘΚΠ the world > the earth > structure of the earth > constituent materials > rock > composite rock > [adjective] > welded by heat > by other means welded1939 1939 Q. Jrnl. Geol. Soc. 95 354 The contact is, as usual, welded, and the base of the overlying sediments consists of current-bedded, brown-weathering, fine sandstone. 1948 R. R. Shrock Sequence in Layered Rocks ii. 55 There are examples..where an entire geological system is represented by the hiatus along the welded contact. 1976 Jrnl. Geol. Soc. 132 125 The contact of the slump sheets with the overlying mega-beds is welded, i.e. depositional fit is present. This entry has not yet been fully updated (first published 1926; most recently modified version published online December 2021). < adj.1837 |
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