in-,进入，使，-dent,齿，咬合，词源同dental,tooth.引申词义缺口，凹痕。

1. The operation was successful. The cheek indentation was now just barely noticeable.

手术很成功, 左边脸上原来那块凹处简直看不见了.

2. Indentation methods of hardness testing comprise two principal groups.

压痕法测定硬度包括两大类.

3. In OCR, an indentation in a stroke.

使用光符阅读器(OCR)时, 笔划上的弯钩.

4. Adjust the die and mould penetrated the changing indentation descend.

调整凹模和凸模之间的间隙,即可改变压痕的深浅.

5. The micro - indentation and fracture are studied by finite element method.

应用有限元方法研究了大变形的微压痕和断裂问题.