overhead travelling crane

• 桥式起重机,天车

overhead travelling crane的用法和样例：

例句

1. This machine is called Bridge Gantry Crane.
   这种机器叫路桥门式起重机。
2. It provides a theoretical basis for super-low headroom large tonnage overhead traveling crane development.
   为柔性化设计理念提供了有力的支持，同时为超低净空大吨位桥式起重机的成功研制奠定了理论基础。