And so, there is the distinction between fixed schedules versus ratios, variable schedules and ratio versus interval.
因此,在固定时程与变化时程之间,以及在比率与间隔之间,存在着一些区别。
And so, there is the distinction between fixed schedules versus ratios, variable schedules and ratio versus interval.
因此,在固定时程与变化时程之间,以及在比率与间隔之间,存在着一些区别。
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