The solar costs decrease continues a 10 year trend of lower and lower costs.
太阳能成本的下降延续了近十年降价趋势。
Learning curve theory states that as the quantity of items produced doubles, costs decrease at a predictable rate.
学习曲线理论说随着生产的产品数量翻倍，成本以可估的比率下降。
Learning curve theory states that as the quantity of items produced doubles, costs decrease at a predictable rate.
学习曲线理论说随着生产的产品数量翻倍，成本以可估的比率下降。
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