three-ply
4.A strong two-ply or three-ply twine for sewing or tying packages or bundles.
6.Collagen has great potential applications because of its unique construction of three-ply helix, predominant bio-compatibility and bio-degradability.
7.The High Stability: The special structure of this Three-Ply wood is interveined in length and breadth which makes its anisotropic physical performance, so the stability is over than others.
8.An three ply BP network has been designed and the corresponding mathematical model built based on the three hypothesis of the DOW’s theory. After the network has been trained through 140 days practical price of 600688 as samples by MATLAB, the 10 days prediction of the stock price and the dispersion Q=0.0146 to the practical data have been made. This has gotten the level which could be almost disregarded.

