fold line

基本解釋

The figure of breakage face of toppling deformation is double fold line.
傾倒變形的破壞面是雙折線型的。
A folding keyboard is set forth with a numeric keypad, and one fold line located between the edge of a standard continuous space bar and the edge of the numeric keypad.
提出了一種折疊鍵盤，其限定有數(shù)字鍵區(qū)，并且一個折疊線位于標準連續(xù)空格鍵的邊緣和數(shù)字鍵區(qū)的邊緣之間。
ip.com
Refers to the suture line, the provincial line, fold line and so on the intersection of a short line, in order to imply that the suture is connected, as a mark of line alignment.
指與縫合線、省線、褶線等相交的一條短線，以暗示縫線相連，作為線條對位時用的記號。