The tooth shape fit and mark of clamping connection and pipe connection inch threads commonly used are introduced and their seal features .

介绍了常见的用于紧固联接英寸制螺纹和用于管道连接英寸制螺纹的 牙形、配合和 标识，以及管螺纹的密封特点。

He doesn 't bite me but when we play I get one or two tooth mark on my hand .

它不会咬我，不过我每次跟它玩完，手上 留下一两个 齿 印可是家常便饭。

Conclusion This method is one of the bases in studying personal identification relating to tooth and bite mark .

结论该方法是研究咬 痕 与 牙模 比对的基础。