前言大海航行靠舵手,干革命靠毛泽东思想。在无产阶级文化大革命胜利的凯歌声中,于1969年初,我们开始向上海机务段、丰台机务段学习新光源——汞氙灯用在机车头灯照明上的先进经验。回来后,经过几个月的筹备、摸索、试验,在各兄弟连队、班组的密切配合和大力支援下,我们靠战无不胜的毛泽东思想,克服了重重困难,闯过了道道难关,终于在 Foreword Sailing by the helm of the sea, dry revolution relies on Mao Zedong Thought. In the victorious triumph of the Great Proletarian Cultural Revolution, in early 1969, we started to learn new light sources from the Shanghai Locomotive Depot and the Fengtai Depot - the advanced experience of using mercury xenon lamps for locomotive headlamp lighting. After coming back, after months of preparation, exploration and experiment, and with the close cooperation and vigorous support of the various company companies and teams, we overcome all obstacles through the invincible Mao Tse-tung Thought.