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采用新技术实行整体－系统设计与引进环境友好的替代技术齐头并进。许多这样的技术已可以得到而且有利可图，但尚未广为人知。某些如像正在使化学工业发生变化的“设计师催化剂”（ｄｅｓｉｇｎｅｒ ｃａｔａ－ｌｙｓｔｓ）那样的技术已经获得了成功的应用。另外一些技术正在开
The adoption of new technologies to implement overall-system design and the introduction of environmentally friendly alternative technologies go hand in hand. Many of these technologies are available and profitable, but they are not widely known. Certain technologies such as “designer cata-lysts” that are changing the chemical industry have been successfully applied. Some other technologies are opening