一种定义
四种语言
0,1,2
- 德國
- 英語
- 中國
- 西班牙語
底切 (v)
hinterschneiden (v)
relief-cut (v)
undercut (v)
The inside corner of the angled profiles is provided with an undercut.
However, it is permissible to factor an undercut of up to 3 cm into the depth measurement of the tread in cramped conditions.
Since undercuts present a trip hazard, they are not suitable for stairways that are to be used by children, ill or disabled people.
