The shedding cycle for plain weave(which is the simplest weave) will repeat on two picks or two weaving cycles. In one weaving cycle,the front harness is in the top position and the back harness is in the bottom position.

• 平纹织物(最简单的织物)的开口循环每织入两纬,或每两个织造循环重复一次。在某一个织造循环中,前综位于上方,后综位于下方；