static string RevertLogoText(string checkText)
        {        
            //初始化品牌的关键字字典
            Dictionary<string, string[]> logoDict = new Dictionary<string, string[]>();
            logoDict.Add("联想笔记本", new string[] { "len", "联想", "Think" });
            logoDict.Add("samsung", new string[] { "三星", "samsung" });

            //转换品牌字符串
            System.Text.StringBuilder builder = new StringBuilder();
            foreach (string str in checkText.Split(new char[] { ' ' }, StringSplitOptions.RemoveEmptyEntries))
            {
                string logoText = str;
                foreach (KeyValuePair<string, string[]> item in logoDict)
                {
                    if (Array.IndexOf(item.Value, str) >= 0)
                    {
                        logoText = item.Key;
                        break;
                    }
                }
                builder.AppendFormat("{0} ", logoText);
            }
            return builder.ToString();
        }