Automotive Exhaust Emission Control 汽车排放控制 收藏 upward identification light 机背识别灯 收藏 .
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It is very necessary to control automotive exhaust emission for the protection of atmosphere environment that mankind relies for existence.
为保护人类赖以生存的大气环境，必须严格控制汽车废气排放。
Catalytic technique is one of the major way in purification of automotive exhaust gases, and catalytic converters are main devices for control of automotive emission.
催化剂技术是治理汽车排气污染物的重要手段之一，催化转化器是控制汽车尾气排放的主要设备。
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