单向偏差 meaning in Chinese

unilateral deviation

From the view of modern weapon system fire precision demands , it is found out that the charge temperature measure maximum deviation should be less than 1 and the standard deviation less than 0 . 7 through reading firing table and making demonstration
而从现代火炮系统射击精度需求角度，经查阅射表和论证可知，药温测量的单向偏差应不大于1 ，标准误差应不大于0 . 7 。