详细解释:n. 巨大, 重大, 重要, 大小, 数量, 星等(指星的亮度)
【计】 大小; 值
英语解释：
名词 magnitude:
the property of relative size or extent (whether large or small)a number assigned to the ratio of two quantities; two quantities are of the same order of magnitude if one is less than 10 times as large as the other; the number of magnitudes that the quantities differ is specified to within a power of 10同义词：order of magnitude