series of observations meaning in English

观察列
观察组

The reduction of series of observation and important single observations must usually be left to the expert .
系统观测和重要的单项观测的归算通常要留待专家来做。
Probability the chance that a given event will occur , or that over a series of observations a particular kind of observation will occur regularly as a given proportion of the total number of observations
概率：指某给定事件即将发生的机率，或经过一系列观察后，某些特定的观察规律性出现的可能性。