The key to an EGR system is introduced, and the control of exhaust gas quantity recirculation quantity of that in every point at best.
EGR系统的关键就是控制废气的引入量，使废气的再循环量在每一个工作点都达到最佳状况。
The key technologies to lower the exhaust emission, included the in-cylinder control, exhaust gas recirculation, variable geometry turbo, 4-valve, common rail and after-treatment are presented.
阐述了降低排放的关键技术，包括缸内控制、废气再循环、可变涡轮增压、4气阀、共轨和排气后处理技术。
The blade-type swirlers have been used in many air engine combustors to control the primary airflow of flame tube and establish a strong recirculation zone.
航空喷气发动机燃烧室中广泛采用叶片涡流器来控制火焰筒的一次空气流量，并建立强回流区。
Pirimiphos-methyl was applicated in grain bulk to control stored-grain insect by gasification application method with different recirculation fumigation facilities.
在不同磷化氢环流熏蒸设备配置条件下采用气化施药法在粮堆中施用甲基嘧啶磷防治储粮害虫。
The results showed that recirculation fumigation under film can effectively improve airtightness of the warehouse and control stored grain insects.
结果表明，采用膜下环流熏蒸可有效提高仓房的气密性，取得良好的熏蒸杀虫效果。
The results showed that recirculation fumigation under film can effectively improve airtightness of the warehouse and control stored grain insects.
结果表明，采用膜下环流熏蒸可有效提高仓房的气密性，取得良好的熏蒸杀虫效果。
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