单词 | resistivity |
释义 | resistivityn. Physics. The specific (electrical or thermal) resistance of a substance; spec. the resistance of a conductor of unit length and unit cross-sectional area. ΘΚΠ the world > matter > physics > electromagnetic radiation > electricity > resistance > [noun] resistance1746 R1842 water resistance1859 resistivity1885 skin effect1890 high-frequency resistance1892 leak1896 negative resistance1896 photoresistance1925 piezoresistance1954 piezoresistivity1958 the world > matter > physics > electromagnetic radiation > electricity > resistance > [noun] > specific resistance resistivity1885 skin resistance1891 specific resistance1899 skin resistance1900 specific resistivity1958 the world > matter > physics > electromagnetic radiation > electricity > electrically induced magnetism > electromagnetic induction > [noun] > resistance to conduction resistivity1885 reluctance1888 reluctancy1888 resistance1888 reluctivity1892 1885 O. Heaviside in Electrician 4 Sept. 311/1 ‘Specific resistance’ may well be called ‘resistivity’. 1902 Encycl. Brit. XXVIII. 5/1 We may express the resistivity [of a metal] by stating the resistance in ohms offered by a wire of the material in uniform cross-section, one metre in length, and one gramme in weight. 1906 J. W. Richards Metall. Calculations I. viii. 177 The thermal resistivity is the reciprocal of the thermal conductivity. 1943 C. L. Boltz Basic Radio i. 26 Anyone capable of working out a formula can therefore find the resistance of any conductor by looking up the tables for specific resistance or resistivity. 1962 Newnes Conc. Encycl. Electr. Engin. 658/1 Copper of the highest purity has a resistivity lower than that of any other known material except silver. 1991 Power Sept. 49/1 The thermal model still is required to..calculate thermal resistivity of the ground. 2005 R. E. Newnham Properties of Materials xxii. 243 Piezoresistivity, the change in electrical resistivity with mechanical stress, is commonly used to monitor static or slowly varying stresses and strains. Compounds C1. General attributive. resistivity measurement n. ΚΠ 1910 Circular Bur. Standards No. 26. 60 These constants will be used in reducing the results of resistivity measurements from one temperature to another. 2003 M. Grantham in J. B. Newman & B. S. Choo Adv. Concrete Technol.: Testing & Quality 6/46 The resistivity measurement is a useful additional measurement to aid in..confirming concerns about poor-quality concrete. resistivity meter n. ΚΠ 1928 Carnegie Inst. Washington Year Bk. 27 213 A comparison of the McCullum earth-current meter with the Gish–Rooney earth-resistivity meter was made.] 1931 Proc. Amer. Petroleum Inst. 12 iv. 51/2 The resistivity meter developed by Mr. Shepard is not intended as a precision instrument, but the error in salt solutions over a wide range of resistivity does not exceed 5 per cent. 2002 K. Greene Archaeol. (ed. 4) ii. 70/2 Prehistoric ditches were located in 1946 by using a resistivity meter. C2. resistivity profile n. the way the resistivity of a medium varies along a line or in a particular direction; a graphical representation of this. ΚΠ 1929 Q. Colorado School Mines 24 111 (caption) Resistivity profiles above the Rhine Fault near Lobsann (Alsace). 1972 Jrnl. Electrochem. Soc. 119 1773/1 The radial resistivity profile along a diameter of a [semiconductor] wafer. 2002 P. Kearey et al. Introd. Geophysical Explor. (ed. 3) viii. 196/2 (caption) Resistivity profiles across a buried ditch. resistivity survey n. a survey of the electrical resistivity of the ground at different points over an area or along a route, typically based on measurements of the current passing between electrodes embedded in the ground at successive pairs of points and used to locate buried structural features; a similar survey of the internal structure of a solid object. ΘΚΠ the world > the earth > earth sciences > geography > map-making > surveying > [noun] > types of survey trigonometrical survey1801 geological survey1818 traverse survey1860 cadastral survey1861 coast-lining1902 resistivity survey1924 resistivity surveying1932 1924 Bull. National Res. Council Jan. 106 It is planned to make a resistivity survey of the entire region. 1966 McGraw-Hill Encycl. Sci. & Technol. (rev. ed.) XI. 22/2 Electromagnetic and electrical resistivity surveys are used to locate deposits of metallic sulfides. 1991 New Civil Engineer 5 Sept. 58/2 (advt.) An entrepreneurial engineer with a love of..resistivity surveys of reinforced concrete. 2007 Brit. Archaeol. Sept.–Oct. 8/2 A resistivity survey is planned to clarify the Restormel fort's internal layout. resistivity surveying n. the practice or action of making resistivity surveys. ΘΚΠ the world > the earth > earth sciences > geography > map-making > surveying > [noun] > types of survey trigonometrical survey1801 geological survey1818 traverse survey1860 cadastral survey1861 coast-lining1902 resistivity survey1924 resistivity surveying1932 1931 Engin. & Min. Jrnl. 131 325 (heading) Earth resistivity surveying.] 1932 Mining & Metall. 13 16/1 A new system of resistivity surveying has been developed which combines the features of four-electrode (constant depth) surveying with the features of single-probe (increasing depth) surveying. 1953 R. J. C. Atkinson Field Archaeol. (ed. 2) i. 38 Resistivity surveying requires at least two operators, one at the instrument and one to move the electrodes. 2002 K. Greene Archaeol. (ed. 4) ii. 70/1 Resistivity surveying measures the resistance of subsoil to the passage of an electrical current. This entry has been updated (OED Third Edition, March 2010; most recently modified version published online June 2022). < n.1885 |
随便看 |
|
英语词典包含1132095条英英释义在线翻译词条,基本涵盖了全部常用单词的英英翻译及用法,是英语学习的有利工具。