axisyrometrical space problem
contact problem with the elastic half space
space axial symmetry problem
Developing Problem Situation Problem Posing
Developing Problem Situations Problem Posing
Fermi-Pasta-Ulam problem， FPU problem
linear programming problem LP problem
servo problem servomechanism-type problem
servomechanism-type problem servo problem
alignment space generated by metric space
CL-space and almost CL-space
conscious space and virtual space
Hardy space and weak Hardy space
mapping between the operation space and pattern space
mapping from virtual axis space to real axis space