Through analysis the location, historical vicissitudes,regime reasons about poverty belt of Beijing Economic Cycle,proposed the suggestion of foothold long-term formulation and implementation poverty-alleviation policy,borrowing the strength of Beijing Economic Cycle integration solution the poverty surround Beijing, established perfect ecology compensation mechanism.

The change from arc shape to crescent shape at the bottom of cross section of dissimilar metal K418 and 42CrMo is observed with the proportion of laser irradiation on K418 to 42CrMo altered from 1/3 to 2/3, which is due to difference of theirs physical and chemical properties.