These factors are mixture concentration, ignition advance Angle, engine speed, temperature of cooling water and carbon deposit on the SUrfaces of the combustion chamber, etc.

通过试验找出了诸因素对怠速排放污染物浓度的影响规律，如混合气质量，点火，发动机转速，冷却水温度及燃烧室表面积炭等。

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Control the supply of fuel, steam, etc in order to reduce the speed of (an engine or a vehicle).

控制燃料、蒸汽等的供给以降低(发动机或车)的速度。

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Analyzing various inputs, such as vehicle speed, engine RPM, throttle position, etc., the TCM decides which gear to shift to and when.

TCM通过分析各种输入信号，例如车速、发动机转速、节气门位置等，来决定何时换入何挡。

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