单词 | siemens' unit |
释义 | > as lemmasSiemens'(s) unit ΚΠ 1867 R. S. Culley Handbk. Pract. Telegr. (ed. 2) ii. 30 ‘Siemens' Unit’ is one metre of pure mercury, of one square millimetre section, at a temperature of 32°. Thus the Ohm and the Siemens are really alike. 1899 J. E. Young Electr. Testing for Telegraph Engineers iv. 48 A third standard, Siemens's unit, equals 0·954 B.A. ohm. < as lemmas |
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