重型机车用英文怎么说写

重型机车在英语中通常被称为"heavy locomotive"或者"heavy-duty locomotive"。

来源：

"Locomotive"是一个英语单词，来自拉丁语"locomotivus"，意思是"能移动的"或者"引导的"。它被用来描述一种用于铁路运输的机器，由一个或多个机车拉着车厢行驶。机车可以是电力驱动的，也可以是燃油驱动的。

英文例句和中文翻译：

The heavy locomotive pulled a long train of freight cars. (重型机车拉着一列满载货物的火车车厢行驶。)

The heavy-duty locomotive was designed to haul heavy loads over long distances. (重型机车被设计成能够在长途中拉动重货。)

The engineer cpmbed into the cab of the heavy locomotive to start the journey. (工程师走上重型机车的驾驶室，准备开始行程。)