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- The frame of mast derrick that is designed for hydraulic wheel tractor hoist adopt welding of armor plate,its section is oblong armor plate,and its material is HG60. 为满足液压轮式通井机的使用要求而设计的桅杆式井架采用板焊结构,主体截面为长方形的方形钢,材料为HG60。
- The frame of mast derrick that is designed for hydraulic wheel tractor hoist adopt welding of armor plate,its section is oblong armor plate,and its material is HG60.Stability,static loads and fatigue life on a derrick are calculated in designing. 为满足液压轮式通井机的使用要求而设计的桅杆式井架采用板焊结构,主体截面为长方形的方形钢,材料为HG60。 对井架进行了稳定性、静强度和疲劳强度设计计算。
- From points of view of technology and economy summarizing the status quo of tractor hoist at home and associating its application status,the predominance of wheeled tractor hoist is analyzed. 从技术和经济角度综述中国通井机设备的现状,结合通井机的使用状况,分析了轮式通井机的优势。
- Analysis on common failure of the AT tractor hoist's work gear-box AT型通井机作业变速箱常见故障分析
- Development of a new hydraulic wheeled tractor hoist 新型液压轮式通井机的研制
- Hydraulic System Design of Wheeled Tractor Hoist with Self - propelled 自行轮式通井机液压系统设计
- The tractor has make deep furrow in the loose sand. 曳引机在松软的沙土上留下了深深的车辙。
- A set of tools goes with each tractor. 每一台出售的拖拉机都附有工具一套。
- He drove the tractor to his farm. 他开拖拉机去农场了。
- We need a hoist to lift the concrete blocks. 我们需要一台起重机来吊起混凝土块。
- There is a tractor in this farmyard. 在这个农家庭院里停着一台拖拉机。
- The tractor is powered by a diesel engine. 这台曳引机是用柴油机发动的。
- The tractor had been damaged by rough usage. 这辆拖拉机因使用不经心而损坏了。
- The clanking tractor went along, shooting smoke out of its belly. 拖拉机铿铿地开了过去，从车肚里喷出烟来。
- The tractor laboured up the hillside. 拖拉机艰难地向山坡上爬去。
- They managed to pull in the tractor inside the shed. 他们设法把牵引机拉进棚里。
- A bar across the rear of a tractor for hitching machinery. 联接杆拖拉机后部牵引机械的横梁
- A man shall hoist sail while the wind is fair. 风好须扬帆。
- A ring or collar of rope used to hoist spars or prevent fraying. 索环一环或一圈绳子，用来升起桅杆或防止磨损
- tractor hoist 通井机, 修井机
