| 单词 | unit length |
| 释义 | > as lemmasunit length c. attributive (in sense A. 10a) with the sense ‘equivalent in magnitude to that constituting a unit; consisting of or forming a unit’, as unit force, unit length, unit weight, etc. ΚΠ 1809 W. Nicholson Brit. Encycl. III. at Gramme The unit weight, called a gramme, is the weight of the cube of the hundredth part of the metre of distilled water. 1839 H. M. Noad Course Eight Lect. i. 31 A very useful little electrical instrument..for registering the exact quantity of electricity given to a Leyden phial from the machine; it is called the unit jar. 1866 R. M. Ferguson Electricity 17 A magnetic needle, of unit size and strength. 1873 J. C. Maxwell Treat. Electr. & Magnetism II. 3 The unit-pole is a pole which points north, and is such that, when placed at unit distance from another unit-pole, it repels it with unit of force. 1876 P. G. Tait Lect. Recent Adv. in Physical Sci. (ed. 2) xiv. 357 Unit force is..that force which, whatever be its source, produces unit momentum in unit of time. 1925 H. C. Booth tr. F. Auerbach Mod. Magnetics (U.K. ed.) vii. 158 The number of windings per unit length is greater on the inner side. 1982 A. Pais Subtle is Lord 24 A fundamental particle with zero mass and unit spin. 1993 R. L. Zimdahl Fund. Weed Sci. 438/1 The amount of active ingredient applied to a unit area. 2009 J. B. Wachtman et al. Mech. Properties Ceramics (ed. 2) xxii. 416 The wear rate of the pin can be measured by the weight loss per unit length of travel along the disk. < as lemmas |
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