单词 | tunnelling |
释义 | tunnellingtunnelingn. I. The action of tunnel v. 1. The use of a tunnel-net to catch birds. ΘΚΠ the world > food and drink > hunting > fowling > [noun] > snaring or netting draughtc1275 trammelling1588 tunnelling1687 bird-snaring1899 1687 Royal Proclam. 30 July in London Gaz. No. 2267/1 That henceforward none presume,..to Kill or Destroy any Hare, Partridge [etc.] by Hunting, Hawking,..Tunnelling, Gins, or any way whatsoever. 1796 J. Anstey Pleader's Guide ii. 23 Acts 'gainst tunneling and snaring. 1819 Sporting Mag. 4 208 It is neither very dark nor very light, in tunnelling for partridges. 2. a. The work or process of making a tunnel; excavation of, or by, a tunnel. ΘΚΠ society > occupation and work > industry > earth-moving, etc. > [noun] > making tunnels tunnelling1811 tunnel-making1910 1811 J. Taylor Remarks Present State Devon in T. Risdon Chorogr. Surv. Devon (new ed.) p. xxix This is the Tavistock canal, which is..attended with the grand operations of tunnelling. 1871 R. A. Proctor Light Sci. 153 Any inaccuracy in the direction of the two tunnellings would have been fatal to the success of the work. ΘΚΠ society > occupation and work > industry > mining > [noun] > lining of pit-shaft tunnelling1686 tubbing1839 plank-timbering1881 well tubbing1898 1686 R. Plot Nat. Hist. Staffs. ii. 98 The Art of tunnelling much used in Cheshire to keep out the freshes. 3. Physics. The quantum-mechanical process whereby a particle has a non-zero probability of penetrating a finite potential barrier even if it has less energy than the height of the barrier. ΘΚΠ the world > matter > physics > quantum theory > quantum mechanics > [noun] > penetration of barrier tunnel effect1932 tunnelling1970 1938 S. Dushman Elem. Quantum Mech. iii. 68 The ‘tunneling effect’..is one of the most important deductions contributed by the new quantum mechanics. 1970 New Scientist 1 Oct. 38/2 Tunnelling is a phenomenon particular to quantum mechanics. 1978 P. W. Atkins Physical Chem. xiii. 402 The particle might be found on the outside of a container, even though according to classical physics it has insufficient energy to escape. This passage through classically forbidden zones is called tunnelling. II. Concrete uses. 4. Work of the nature of a tunnel; subterranean excavation for a canal, road, or railway; a tunnel, or tunnels collectively. ΘΚΠ society > travel > means of travel > route or way > other means of passage or access > [noun] > underground passage or tunnel > collectively tunnelling1795 the world > space > shape > unevenness > condition or fact of receding > hollowness > [noun] > a cavity or hollow > like tunnels tunnelling1894 1795 J. Phillips Gen. Hist. Inland Navigation (rev. ed.) Add. 131 Another navigable cut.., principally tunneling, will shorten the line four miles. 1798 Monthly Mag. July 74 900 yards of tunneling. 1894 Daily News 22 Jan. 4/8 One of the fat, pink, repulsive-looking grubs, coiled up in one of the wide tunnellings that have ruined the tree. This entry has not yet been fully updated (first published 1915; most recently modified version published online December 2018). < |
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