Since random-access memory (RAM) on a chip became widely available in the mid- 1 9 7 Os, its capacity has grown fourfold every three years.是什么意思_Since random-access memory (RAM) on a chip became widely available in the mid- 1 9 7 Os, its capacity has grown fourfold every three years.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句