. Finally, from the Department of a vertical pull back to a place, with second straight (that is, ethylene propylene) parallel. So you have a square framework. Of course, the spider frame, not necessarily a full square, but it is always done in this way. This superb skill is the spider webs because it takes itself as the measuring instrument, determines the mechanical movement and position behind two on foot and textile process, so can be made into such a clearly demarcated screen. After a spider web, sometimes squatting in the network center; sometimes hidden in the shadows, and by a "signal" line, straight from the network center to the side, ready to accept online from the "signal" accurately, clever hunting food.
People through the observation and study of the countless times, found the law of spider webs
