齿孔

gāi dài tǐ de lìng yī duān zé xíng chéng chǐ kǒng néng yú luó shuān tǐ de luó wén bù yǎo hé

该带体的另一端则形成齿孔，能于螺栓体的螺纹部咬合。

The other end of the belt body is provided with a toothed hole which can be engaged with a thread part of the bolt body.

chǐ kǒng cuò piào

齿孔错票

misperforated stamp