- A gear with teeth radially arrayed on the rim parallel to its axis.正齿轮：牙状齿按辐射形安置在与轴平行的边缘上的齿轮
- dilapidate
- dilapidated
- dilapidated
- dilapidated
- dilapidates
- dilapidating
- dilatancies
- dilatancy
- dilatant
- dilatation
- dilatation and curettage
- dilatations
- dilatator
- dilatators
- dilate
- dilate
- dilated
- dilated
- dilater
- dilates
- dilating
- dilation
- dilation and curettage
- dilation and evacuation
- dilation and extraction