problem studying  问题研究

studying of factor of water equality solve problem  影响水质因素分析

Developing Problem Situation Problem Posing  发展问题情境拟题

Developing Problem Situations Problem Posing  发展问题情境拟题

Fermi-Pasta-Ulam problem， FPU problem  FPU问题

linear programming problem LP problem  线性规划

servo problem servomechanism-type problem  单细胞蛋白

servomechanism-type problem servo problem  视孔

Agriculture,Peasant,Countryside problem  14磅

cold-drawing mill problem  K镜机构

countryside,peasant,agriculture problem  板铁矾; *-自同构

four mine problem  任何人─

Problem Students in universities and colleges  孕马血清促性腺激素(PMSG)

San Nong problem  比重

three agricultures problem  测定; 循环使用

three dimensional fishery problem  胆影酸钠

tri-agro problem  青铜色

#P-complete problem  红外吸波材料; #P-完全问题

(generalized) Euclidean Steiner problem  (广义)欧几里德Steiner问题

[] problem  定位问题