英语翻译发动机应用的范围在不断扩大,品种和数量不断

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发动机应用的范围在不断扩大,品种和数量不断的增多,对发动机的技术指标的要求也愈来愈高.
With the increasing spread of application range,as well as the series and quantity of the engine,the corresponding requirements on technical index for it are also getting higher and highe