英语翻译
The rough titration is carried out frist to determine the approximate end point.The titration is then repeated more accurately,with very careful addition of solition from burette as the approximate end point is approached.Two consisitent tritration results are got in this way,agreeing within 0.1cm^3.The mean of the accurate tires is taken as the final result.
如果有打错一两个字的地方请见谅