Bessel formula for solution of geodetic problem
formation of problem iconic
formulas for dermatological problem by oral administration
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
Member 4 of Quantou Formation -Yaojia Formation
Qingshankou Formation-Yaojia Formation
the 2nd Member of Shanxi Formation—the 8th Member of lower Shihezi Formation
Agriculture,Peasant,Countryside problem
cold-drawing mill problem
countryside,peasant,agriculture problem
Problem Students in universities and colleges