| 单词 |
clo |
| 释义 |
clo, n.2 orig. U.S.|kləʊ|
[Shortening of clothing vbl. n.]
A unit of thermal resistance used to express the insulating properties of clothing (see quots. 1941, 1986). Cf. tog n.1 3.
1941A. P. Gagge et al. in Science 7 Nov. 429/1 The unit for thermal insulation of clothing is logically the amount of insulation necessary to maintain in comfort..a sitting-resting subject in a normally ventilated room (air movement 20 ft/min or 10 cm/sec) at a temperature of 70°F (21°C) and a humidity of the air which is less than 50 per cent. This unit of insulation may be called 1 clo. 1951Canad. Mining Jrnl. Aug. 65/3 It was not until the Second World War that..a new unit called the ‘clo’ was coined in order to express..the efficiency of a textile in retaining warmth. 1977R. F. Goldman in Hollies & Goldman Clothing Comfort i. 7 Proposed by Dr. Gagge and his colleagues..some 30 years ago, one clo was characterized as the intrinsic insulation..of the typical business suit worn in those days. 1980New Scientist 14 Aug. 537 Wool fibre, several centimetres thick, down and the new 3M material have clo values of 0.9, 1 and 1.8 respectively. 1986Jerrard & McNeill Dict. Sci. Units (ed. 5) 29 A clo is defined in physical terms as the amount of insulation that will allow the passage of 1 calorie m-2 h-1 with a temperature gradient of 0.18°C between the two surfaces. |
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