| 单词 | zone levelling |
| 释义 | > as lemmaszone levelling zone levelling n. a process similar to zone refining in which the molten zone is passed repeatedly to and fro to produce a more homogeneous material. 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 1953 W. G. Pfann in Trans. Amer. Inst. Mining & Metall. Engineers CXCIV. 752/1 The discussion of zone-melting has been confined to the categories of zone-leveling and zone-refining. 1978 P. W. Atkins Physical Chem. x. 301 A modification of the technique, zone levelling, is used to introduce controlled amounts of impurity (for example, indium into germanium). < as lemmas |
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