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
banana bunchy top virus Zhangzhou isolate
clinic isolate bacteria
Clinical isolate bacterial
clinical isolate of pathogenic bacterial
composition of CTV isolate
corn germ protein isolate