choose method
4.In this paper,applying stereopair plotting in full digital photogrammetric system and single photo differential correction on common PC in DOM production is analyzed,which involves some aspects as basic principle,production process,quality control,precision analysis,comparison of advantages and disadvantages,application condition,which provide reference for some engineering companies need DOM to choose a reasonable method.
9.Based on the widely use of MEK,we choose MEK as the ultimate productantin our research and use an advanced industry method------n-butenyl directlyhydration to prepare SBA and SBA dehydrogenation to prepare MEK .

