| 单词 | zone refining |
| 释义 | > as lemmaszone refining zone refining n. a method of refining used to produce semiconductors and metals of very high purity by causing narrow zones of molten material to travel slowly along an otherwise solid rod or bar, so that impurities become concentrated at one end or the other if their solubilities in the liquid and the solid phases differ. ΘΚΠ society > occupation and work > industry > working with specific materials > working with metal > [noun] > refining > methods of calcinationc1386 calciningc1386 liquation1471 fulmination1617 cupelling1644 decrepitating1662 decrepitation1669 fulguration1676 concentration1689 cupellationa1691 scorification1755 affination1851 thermite process1905 zone melting1952 zone refining1952 zone levelling1953 1952 W. G. Pfann in Jrnl. Metals IV. 750/2 The particular merit of zone-refining becomes evident when repeated crystallizations are desired. 1973 J. G. Tweeddale Materials Technol. I. vi. 152 Probably the most effective and generally used method of refining to this kind of standard is zone refining. < as lemmas |
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