... engine operating range；发动机工作范围 engine operating speed；发动机工作速度 engine operating temperature；发动机工作温度 ...
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Famous brand hydraulic components are adopted, Cummins engine of which the operating life is long, and the power is driving and the operating speed is fast.
采用名牌液压件，康明斯发动机，使用寿命长，动力强劲，工作速度快。
The performances of diesel engine are improved by higher swirl in the operating range of low speed and high load.
在高速区降低进气涡流强度，发动机的性能和排放均有明显改善。
The results show that the best operating region of HCCI engine is related to the engine load, speed, and the mixture excess air ratio.
研究结果表明：均质充量压缩着火发动机的最佳工作范围与发动机转速混合气过量空气系数和负荷有密切的关系；
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