单词 | local battery |
释义 | > as lemmaslocal battery local battery n. Telegraphy and Telephony (now chiefly historical) a battery which powers only adjacent telegraph or telephone equipment, as contrasted with a battery that provides current to the line, or with equipment which is powered centrally.In situations where a local battery is used, current sent to a distant instrument or to an exchange is typically generated using a hand-cranked magneto. ΚΠ 1845 H. J. Rogers Telegr. Dict. 40 How is your local battery? 1916 Telegr. & Telephone Age 1 Apr. 169/2 One of the messenger boys had..cracked one of the glass jars of the local battery which fed one of his call circuits. 1961 M. G. Say Electr. Engineer's Ref. Bk. (ed. 10) xxiii. 65 The telephone system is local battery operated with magneto ringing. 1993 Gloss. Electrotechnical, Power Terms (B.S.I.) iii. ii. 19 Telephone station... The auxiliary equipment may include for example: an external call indicating device, a protector, a local battery. < as lemmas |
随便看 |
英语词典包含1132095条英英释义在线翻译词条,基本涵盖了全部常用单词的英英翻译及用法,是英语学习的有利工具。