secondary emission multiplier

例句：

1. 1.The secondary emission multiplier is designed to reduce emissions from the exhaust system.
   次级排放倍增器旨在减少排气系统的排放。
2. 2.The new model of the car has a secondary emission multiplier that can significantly reduce pollution.
   这款新车配备了次级排放倍增器，可以显著减少污染。
3. 3.The government has introduced a new policy to control secondary emission multipliers in industries.
   政府已推出新政策以控制工业中的次级排放倍增器。