Abstract: A method is presented using the scale of the corrosion environment of the metal, i.e. corrosion electric current, and controlling the moisting time of the metal face, to speed up the environment spectrum. Use of the writer′s ESXU system program and COES equity conversion test system results in the COE equity conversion curve and north seacoast equity environmental spectrum for one calender year. A contrast test with the atmospheric environment exposure of the sample has proved the reliability of this method.

Key words: environmental spectrum, equity　speed　testspectrum