The fretting wear is resulted from different or same sample’s surfaces by the small variationand leads to mechanism failures. The main factors consist of the v
To improve the accuracy of numerical simulation of muzzle chemical flow field,and study the gunpowder combustion productions, the muzzle flow field is simulated
The overall purpose of this research is to examine the impact of untreated sedimentation tank sludge water( USTSW) recycle on water quality during treatment of