您要查找的是不是：
- Overhead and gantry crane site 高架和高架龙门起重机场地
- Overhead and gantry crane 桥式和高架龙门起重机
- Rules for Construction of Overhead and Gantry Cranes (Top Running Bridge, Multiple Girder) 桥式起重机和龙门起重机的建造规则(沿轨道上翼缘行走的桥架起重机复合梁)
- Adjustable hydraulic brake for traveling mechanisms of overhead and gantry cranes 桥门式起重机运行机构可操纵液压制动器
- Many occasions to replace bridge crane and gantry crane operations, less investment, high efficiency, the products on the market after Pode users praise. 许多场合下可替代桥式起重机和龙门吊作业，投资少、效益高，该产品投放市场后颇得用户好评。
- Problems involving overhead and gantry cranes'inspection 检验桥、门式起重机时应注意的问题
- To be positioned and handled by hatch cover gantry crane. 用舱口龙门吊来吊放它们。
- If the site is small, it may be commanded by a gantry crane. 假如场地小，则可采用龙门式吊车进行操作。
- Gate and gantry crane safety evaluation index and weight analysis 闸门与启闭机安全评价指标与权重研究分析
- overhead crane and gantry crane 桥门式起重机
- Single-girder gantry crane is a gantry crane. 单主梁门式起重机是门式起重机的一种。
- This machine is called Bailey gantry crane. 这种机器叫贝雷门式起重机。
- This machine is called Bridge Gantry Crane. 这种机器叫路桥门式起重机。
- A four-inch twig buzzes overhead and thuds onto a nearby branch. 一根四英寸长的“细枝”在高处嗡嗡作响，砰的一下撞上了旁边的树枝。
- Cost-effective analysis between truck crane and gantry crane in concrete pipe installation 汽车起重机与龙门吊架安装混凝土管的比较
- It caused a lot of trouble that the project used a gantry crane. 这项工程动用了龙门吊，可真是麻烦啊。
- The multiplier for the estimate of man-hour costs to take care of overheads and fringe benefits. 工时成本估计的乘数及以满足福利费和经营管理费的需要。
- High overheads and maintenance cost top the list. 高昂的经常性费用和保养费居首位
- gate and gantry crane 闸门与启闭机
- Upper levels are reached via timber staircases and gantries. 上层是透过木材楼梯和门架。
