A unit of length equal to one hundred-millionth (10-8) of a centimeter, used especially to specify radiation wavelengths.
埃长度单位，等于一厘米的百万分之一(10 - 8)，用来记录辐射波长。
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The millionth new phone, however, adds not two or even two hundred but two million new potential calls, making the network even more attractive for the next million users, and the millions after that.