单词	color disc-- colour disc
释义	color disc， colour disc[比]色板
随便看	zone of mild pollution zone of non-saturation zone of normal distribution zone of occassional distribution zone of optimal proportion zone of optimum condition zone of oxidation zone of permanent saturation zone of planes zone of polarizing activity zone of pollution zone of possible distribution zone of preference zone of preference for acceptance zone of preference for rejection zone of primary deposit zone of primary deposits zone of primary ore zone of primary sulphide zone of protection zone of proximal development zone of proximal development (zpd) zone of proximal development(zpd) zone of radial shear zone of recess