短語(yǔ)詞組短語(yǔ)free from cyanide 光亮free hydrogen cyanide 游離氰化氫cyanide free 無(wú)氰cyanide free extracting gold 無(wú)氰提金cyanide free zinc 無(wú)氰鍍鋅工藝cyanide free desorption 無(wú)氰解吸cyanide free process 非氰化法alkaline cyanide free zinc process 堿性非氰鍍鋅工藝cyanide -free technology 無(wú)氰工藝 返回 free cyanide