在19世纪晚期，欧洲和美国的电气化进程开始将蓄电池大规模用于电信技术、便携式电灯系统和后备电源。
The electrification of Europe and America in the late 19th century sparked the use of storage batteries for telegraphy, portable electric-lighting systems and back-up power.
目前常见的便携式核数据测量分析仪电源供应为单一的蓄电池供电方式，这不仅影响测量仪器的长时间连续正常工作，而且增加了系统的成本和体积。
Accumulator is commonly used as power-supply of Portable-Type Nuclear Data Analyzer at present, which impose a limit on the Analyzer's working time and increase its volume and cost.
ECG——6511是医院常见的便携式单导心电图机，其具有抗干扰性能好、操作方便、蓄电池容量大等优点。
ECG-6511 is a familiar single-lead protable electrocardiograph in the hospital. It has high anti-interference quality, It will lost the protable function.
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