超硬质牙科石膏,超硬质人造石的英文

extra hard dental stone

• 超:    exceed; surpass; o ...
• 硬:    hard; stiff; tough
• 质:    nature; character; ...
• 牙科:    dentistry
• 石膏:    gyp; oulopholite; ...
• 人造石:    artificial stone; ...