To comply with these regulations, automakers are being forced to develop ultra low-emission engine systems by optimizing combinations of technologies related to combustion, aftertreatment and fuel.

为了满足这些排放法规，汽车制造商不得不优化相关的燃烧、后处理和燃料等技术，从而开发超低排放发动机系统。

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Solid propellant engine systems are basically less flexible in operation than liquid or hybrid propellant systems.

固体推进剂发动机系统的可调性基本上比液体或混合型的要差。

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A quasi three dimensional flow Euler model with viscous force terms was constructed for integrated small turbofan engine systems.

建立了一体化弹用小涡扇发动机系统含粘性力项的准三维欧拉流动模型。

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Berges, 45, turned around the company's aerospace engine systems and accessories division, but his new job may be even tougher.

FORBES: Bleeding arm, but no bleeding heart

Unite claims Mahle Engine Systems wants to offshore component manufacturing for the automotive market to sites in Italy and Slovakia.

BBC: Mahle workers in Kilmarnock vote for industrial action

Members of the trade union Unite have voted to take strike action at Mahle Engine Systems in Kilmarnock in an attempt to safeguard up to 260 jobs.

BBC: Mahle workers in Kilmarnock vote for industrial action