ball and socket base

常见例句

雙語例句

• Methods The ball was placed on the root cap coping and the socket on the base of overdentures, so that we could get the retention for making use of the friction between the ball and the socket.
  方法 將球形結搆安放於牙根之上，球帽安放在覆蓋義齒的基托中，利用球帽與球形結搆上球頭之間的摩擦産生固位力。
返回 ball and socket base