| 1. | To raise or lower ( the boom of a crane or derrick
起重吊杆是一种最简单的起重机。 |
| 2. | Pier segment erection with 250 ton crane bridge
250吨起重吊船-桥墩顶部预制构件安装 |
| 3. | The ginpole is the simplest form of derrick
起重吊杆是一种最简单的起重机。 |
| 4. | Ships ' light load derrick gooseneck brackets
船用小负荷起重吊杆转枢拖架 |
| 5. | Bearings for derrick goosenecks - assemblies and components
起重吊杆鹅颈管轴承.组件和部件 |
| 6. | Ships ' light load derrick topping brackets
船用小负荷起重吊杆上托架 |
| 7. | The commanding signal for lifting and moving
起重吊运指挥信号 |
| 8. | Permissive length of seamless steel pipe used as slings for lighting load and its bearing capacity
用无缝钢管作起重吊具的允许长度和承载能力 |
| 9. | Research progress and developing orientation of chemical extraction technology of weathing crust strain amass - type rare earth ore
高稳定型稀土永磁起重吊的开发 |
| 10. | T dat dt short link chain for lifting purposes - safety - fine tolerance hoist chain , grade t types t , dat and dt
升降用的短节链条.安全性.精密公差起重吊链等级t |
