please translate chinese for me thx~ an increase of this order of magnitude how to understand this order of magnitude? The star varies in brightness by about three magnitudes. how to understand var

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Tiffany lam

please translate chinese for me thx~ an increase of this order of magnitude how to understand this order of magnitude? The star varies in brightness by about three magnitudes. how to understand vary by?? what is the meaning of by in here?

2017년 7월 10일 오전 5:01

답변 · 3

--------an increase of this order of magnitude------- order是顺序、次数的意思，引申出等级的意思，在数学上表示次、级、阶的意思，（one/an 2, 3, ...） order(s) of magnitude 是几个数量级的意思，但是在非数学的语境中，an increase of this (=so) order of magnitude 的意思是如此巨大的增长 ------- The star varies in brightness by about three magnitudes. --------- 这颗恒星的亮度是变化的，变化的幅度可达三个星等（表示天体亮度的单位） vary in ... 在某方面的变化，这是介词in的一个用法；介词by 后接数量短语用来表示数量的大小、变化的比例、幅度等等

2017년 7월 10일

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