二十世纪七十年代，这些发着红光的二极管在太空时代被广泛使用，它出现在收音机闹钟，袖珍计算器以及电子手表上。
The first ones to come into wide use—glowing a space-age red—turned up in the clock radios, pocket calculators, and digital watches of the 1970s.
二十世纪七十年代，这些发着红光的二极管在太空时代被广泛使用，它出现在收音机闹钟，袖珍计算器以及电子手表上。
The first ones to come into wide use—glowing a space-age red—turned up in the clock radios, pocket calculators, and digital watches of the 1970s.
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