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前言 内燃动车组,按其运行速度,可分为高速、中速和低速三种。高速内燃动车组设计运行速度为每小时200公里,中速为每小时120-160公里,低速为每小时81-120公里。本刊前两期介绍了5种高速内燃动车组和3种中速内燃动车组。本期除再介绍1种中速内燃动车组外,还将介绍3种低速内燃动车组。
Foreword Internal combustion EMUs, according to its operating speed, can be divided into high-speed, medium-speed and low-speed three. High-speed diesel-powered units are designed to operate at speeds of 200 kilometers per hour and medium speeds of 120-160 kilometers per hour and at low speeds of 81-120 kilometers per hour. The first two issues of this magazine introduced five kinds of high-speed diesel-powered and three kinds of medium-speed diesel-electric vehicles. In this issue, besides introducing one kind of medium-speed diesel-fired EMUs, three kinds of low-speed DMUs will also be introduced.