the condition of being pressed closely together and firmly fixed
a disorder in which feces are impacted in the lower colon
a disorder in which a tooth is so crowded in its socket that it cannot erupt normally
a sharp collision produced by striking or dashing against something
例句
用作名词 (n.)
Impaction of morselized bone graft in reparation and reconstruction of acetabulum and femur represented an attractive revision option. 其中压紧颗粒骨移植是一种修复重建髋臼和股骨缺损的好方法。
美
[ɪm'pækʃən]
