简易猪舍覆盖塑料薄膜对猪冬季肥育影响的研究
The effects of open-front building covered with plastic film on the performance for finishing pigs during winter
目的评价简易套筒冠覆盖义齿的临床应用前景。
Objective To evaluate the clinical perspective of analogical telescopic prosthesis .
简易覆盖