应该是冲淡进气中的氧含量，达到降低燃烧峰值温度，也抑制NOX的产生，最终是为了减排

来源: Oneshotkill 于 2015-12-05 12:03:36 [旧帖] [给我悄悄话] 本文已被阅读：次

WENXUECITY.COM does not represent or guarantee the truthfulness, accuracy, or reliability of any of communications posted by other users.