1、And give two standard deviations from your answer.
從答案里給出兩個標準差。

2、Mean strengths and standard deviations were determined.
計算抗彎強度的平均值和標準差。

3、The standard deviations were always impossible to measure.
標準偏差總是不可能度量的（微基準測試的典型情況）。

standard deviations翻譯