| 释义 |
cryogen Chem.|ˈkraɪədʒɛn|
[mod. f. Gr. κρύο-ς frost, icy cold + -gen taken as = producer.]
A freezing-mixture, or a substance which when mixed with ice produces a freezing mixture.
1875F. Guthrie in Proc. Physical Soc. I. 76 By Cryogen I mean an appliance for obtaining a temperature below O° C. In this paper it always signifies a freezing-mixture. 1881Watts Dict. Chem. VIII. 1005 The temperature of the mixture when used as a cryogen. |