Also known as M, mega prefix, mega SI prefix, M-, mega-
国际单位制词头，指10的6次幂
AI overview
Mega is a metric prefix meaning one million times, represented by the symbol "M" — so a megabyte is one million bytes, for example. It was officially adopted in 1960 as part of the International System of Units, making it a standard way to express large quantities across science, technology, and everyday measurements.
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Article · 中文
兆（英語：mega-，台湾稱作百萬），是國際單位制的SI词头，表示因数106（1000000），符號为M，在1960年确认用于国际单位制（SI）。英语Mega源自希臘語μέγας，意为“巨大的”。
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