“heavy-duty car”的概念、定义、翻译、参考文献-科学参考

单词	heavy-duty car
释义	heavy-duty car [¦hev·ē ¦düd·ē `kär] ^{MECHANICAL ENGINEERING} A railway motorcar weighing more than 1400 pounds (635 kilograms), propelled by an engine of 12-30 horesepower (8900-22,400 watts), and designed for hauling heavy equipment and for hump-yard service.
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