As most men are right handed, it was conventional to wear the sword and scabbard on the left-hand side of the belt, to facilitate the drawing of the sword with the right hand.
由于大多数男性右手，有人穿传统的剑和鞘左边的皮带为方便绘制剑与右手。
2
Based on analysis of failure form about the conventional synchronous belt drives, several important problems in application of the synchronous belt drives are pointed out.