In even twill fabrics, the filling yarns pass over and under the same number of warp yarns, whereas in uneven twills the pick goes over either more or fewer warps than it goes under.

• 对于双面斜纹织物,处于纬纱之上和纬纱之下的经纱根数是相同的。而对于单面斜纹织物,处于纬纱上面和纬纱下面的经纱根数是不同的。