order of magnitude

剑桥词典

the approximate size of something, especially a number
（尤指数字的）数量级，大小
The country's debt this year will be of the same order of magnitude as it was last year . 今年该国的债务与去年相比在同一数量级上。
mathematics   specialized
a level in a system used for measuring something in which each level is ten times larger than the one before
成指数增加的，以十倍为单位增加的
These processor speeds have recently increased by two orders of magnitude (= by a hundred times ). 这些处理器的速度最近增加了两个指数单位（一百倍）。 返回 order of magnitude