| 单词 | liquid oxygen |
| 释义 | > as lemmasliquid oxygen liquid oxygen n. oxygen in a liquid state. ΘΚΠ the world > matter > liquid > [noun] > types of liquid generally > liquid air or oxygen liquid oxygen1878 liquid air1899 1878 Jrnl. Chem. Soc. 34 10 A jet of liquid oxygen escaping from the tube when the pressure was taken off. 1885 Sci. Amer. 9 May 291/3 Some experiments recently made..appear to show that liquid oxygen is one of the best of refrigerants. 1919 Chem. Abstr. 791 Spontaneous explosion of the charcoal in liquid-oxygen containers. 1954 Economist 11 Sept. 12/1 Rocket motors do not need atmospheric oxygen, although they frequently carry liquid oxygen, and rocket power is, unlike jet power, effective in outer space. 1956 Spaceflight Oct. 5/1 Propellants which are in common use to-day (e.g. liquid oxygen and petrol) yield exhaust velocities of the order of 2½ km./sec. < as lemmas |
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