dunce

n.

蠢材，笨学生；

复数：dunces

1. A stupid person; a dunce.
   笨蛋愚蠢的人; 迟钝的学习者
2. It is very impolite to call others a dunce.
   叫别人蠢材是不礼貌的。

Development of Wave Dragon from Scale 1:50 to Prototype
Phase Transitions in NaBiTiO-SrTiO-PbTiOSolid Solutions
PHASE TRANSITIONS IN Na1/2Bi1/2TiO3-SrTiO3-PbTiO3 SOLID SOLUTIONS
High Electrocaloric Effect in Ferroelectrics
Development of Wave Dragon from Scale 1:50 to Prototype
Phase Transitions in Modified Na1/2Ba1/2TiO3-SrTiO3-PbTiO3 Solid Solutions
Structure and dielectric properties of Na1/2Bi1/2TiO3-BaTiO3 solid solutions
SINTERING OF LEAD-FREE (K0.5Na0.5)NbO3 BASED SOLID SOLUTION
SINTERING OF LEAD-FREE (KNa)NbOBASED SOLID SOLUTION
> > > Phase transitions in NaBiTiO-(SrBi)TiO-PbTiOsolid solutions