| 单词 | Common battery |
| 释义 |
Common battery
原声例句
大商业时代 It was Mr. Scribner also who replaced the individual system of dry cells with one common battery located at the central exchange, an improvement which saved the Company 4,000,000 dry cells a year. 也是 Scribner 先生用位于中央交易所的一个普通电池取代了单独的干电池系统，这一改进每年为公司节省了 4,000,000 个干电池。
英语百科
Common batteryIn telecommunication, a common battery is a single electrical power source used to energize more than one circuit, electronic component, equipment, or system. A common battery is usually an electrolytic device and is usually centrally located to the equipment that it serves. In many telecommunications applications, the common battery is at a nominal −48 VDC. A central office common battery in the battery room supplies power to operate all directly connected instruments. Common battery may include one or more power conversion devices to transform commercial power to direct current, with an electrolytic battery floating across the output. Common battery operation largely replaced local batteries in each telephone in the early 20th century. |
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