英语词汇“undercool”的英英意思、用法、释义、翻译、读音、例句、短语、词组、英语词典-本地帮

单词

undercool

释义

underˈcool, v.
1. [under-¹ 8 c.]
a. trans. = supercool v. a.
1895C. S. Palmer tr. Nernst's Theoret. Chem. i. iii. 65 Probably the two curves would intersect asymptotically at abs. zero, if one could under-cool a liquid so far.1962Zeitschr. f. Metallkunde LIII. 600/2 Many molten metals slagged in Pyrex glass can be highly undercooled irrespective of the amount.1977Scripta Metall. XI. 253 Ingots..were under-cooled and solidified under increasing gravity-levels.
b. intr. = supercool v. b.
1969Cast Metals Research Jrnl. V. 137/1 Cooling curves for ductile iron showed no distinct eutectic arrest but undercooled during eutectic solidification.1977Scripta Metall. XI. 253 The prepared boules were heated to 230°C, and allowed to undercool.
2. [under-¹ 10 a.] trans. To cool insufficiently.
1983New Scientist 13 Jan. 83/2 The continued loss of core-cooling water..meant that the reactor's core was seriously undercooled.
Hence underˈcooled ppl. a.; underˈcooling vbl. n.
1895C. S. Palmer tr. Nernst's Theoret. Chem. I. iii. 65 The dotted line is the pressure curve of the under-cooled liquid substance, and forms the continuation of the pressure curve of the liquid.1913Engineering 10 Oct. 510/3 The under-cooled liquid phase can in many cases be retained in the metastable condition at temperatures far below the normal freezing-point by a process of under⁓cooling.1936Forestry X. 128 The point at which ice formation begins may be still further lowered by under⁓cooling. If water is kept absolutely still, it is possible to lower its temperature below the freezing point without ice formation... This undercooling often takes place in plants.1980Sci. Amer. Apr. 84/3 Above the glass temperature, in the undercooled liquid phase, the atoms are free to make extensive translational movements.

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