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1·A few sentences regarding preignition and detonation may be helpful.

再说几句有关早燃和爆燃的问题。

2·A few sentences regarding preignition and detonation may be helpful.

再说几句有关早燃和爆燃的问题，或许是有益处的。

3·This paper introduces a new power supply of preignition for pulse xenon lamp.

本文介绍了一种新型的脉冲氙灯预燃电源，它利用三端开关电源模块构成其主电路。

4·This paper describes a system for preignition in motorcycle engine using spark plus as a detecting probe, the author carries out researches on a method how the ionic current comes into being.

本文描述了一种直接利用火花塞电极作为传感器检测南方摩托车发动机早燃的方法，作者在文章中详细分析及讨论了离子电流的产生机理。