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- portable derrick crane 轻便转臂吊机
- Discussion is made on the installation process and method of the placement technique for CO2 regenerated tower with double derrick crane method. 用双抱杆抬吊就位技术对CO2再生塔的安装方法及过程进行了论述。
- The vessel is fitted with lifting appliances/ derrick cranes. 此船裝置有起重設備/人字吊機。
- Finite element analysis of large tonnage derrick crane 大吨位桅杆起重机有限元应用研究
- Testing and measuring of the stress on derrick crane 动臂桅杆起吊应力的试验测试
- The ginpole is the simplest form of derrick. 起重吊杆是一种最简单的起重机。
- To raise or lower(the boom of a crane or derrick. 升降使起重机的吊臂上升或下降
- Stand clear of the swinging boom of the crane. 不要走近转动的超重机吊杆。
- Bob tuned in his portable radio to a record show. 鲍伯收听手提收音机的唱片广播。
- To raise or lower(the boom of a crane or derrick). 升降使起重机的吊臂上升或下降
- Completely portable and very light weight. 便携式的,而且重量很轻。
- Portable telephones are very popular nowadays. 现今,移动电话非常普及。
- From every window head is crane for a view of it. 每一个窗口都有人探出头来看。
- Specification for power-driven derrick cranes 动力驱动的桅杆起重机规范
- He found that little TV extremely portable. 他觉得那台小小的电视机携带极其方便。
- I bought my son a portable typewriter. 我给儿子买了一台手提式打字机。
- The document had been typed on a small portable. 这份文件是用便携式打字机打的。
- He crane his neck to get a glimpse of the parade. 他伸长脖子看了看游行的队伍。
- The new portable computers are going like hot cakes. 新的便携式计算机卖得很快。
- Installation Method for Main Span and Design of Derrick Crane for Rama 8 Cable Stay Bridge in Thailand 泰国RAMA8斜拉桥主跨安装及桥面吊机研制