港口门座起重机是港口装卸作业的主要起重设备。
The portal crane is the main hoisting equipment for loading and unloading in the port.
门座起重机是我国研制最早、具有重要代表性的一种旋转式有轨起重机。
The partially slewing crane is a kind of representative rotary rail crane, which is also the first developed type in our country.
港口门座起重机是港口生产作业的主要装卸设备，其运行技术状态的好坏直接影响着港口的生产效率和经济效益。
Portal Cranes are the main handling facilities of the port production and the technological state of their performance affect the production efficiency and economic benefits of the port directly.
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