long shank carborundum needle
carbide welded taper shank machine reamer
straight shank machine reamer
taper shank machine reamer
Machine taps with helical flutes
long-spanned and long-unit continuous girder bridge
ballast distributing and trimming machine；ballast distributing and regulating machine
One Machine to More Machine
technique and equipment of on-machine cooling in sintering machine
(2+1)-dimensional dispersive long wave equation