loop length该怎么解释,应该指回路的周长,还是直径?
问题描述：
loop length该怎么解释,应该指回路的周长,还是直径?
答
The “loop length” can never be a diameter.It's the perimeter of something round or oval.As you explained hereunder,if you fold a ribbon and stitch/sew it,and fix it to something else,e.g.sleeve,then...