upper junction plate

例句：

1. 1. The upper jointplate is crucial for the proper functioningof the joint.
   上关节板对于关节的正常功能至关重要。
2. 2. The doctor performed a surgery onthe patient's upper joint plate.
   医生对患者的上关节板进行了手术。
3. 3. The upperjoint plate was damaged during the accident.
   事故中上关节板受损。