The first solar cell fabricated in american bell lab in1954 opens a new era of the applications of solar cell 1954年美国贝尔实验室研制出世界上第一片实用型半导体太阳能电池，开辟了太阳能利用的新纪元。
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American bell purchases controlling interest in western electric and makes it the manufacturer of equipment for the bell telephone companies 美国贝尔公司购买西方电力公司并使之成为贝尔电话公司设备制造商。
