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1 янв 1970 г. - Exxon lowerd the cost of solar cells
Описание:
Exxon funded research of Dr.Elliot Bernam to prodice a cheaper solar cell. The cost was brought down from $300 to about $20 per watt.
Добавлено на ленту времени:
12 ноя 2018
0
0
304
econ
Дата:
1 янв 1970 г.
Сейчас
~ 54 г назад