Derricks are scattered here and there on the boundless plain.
在一望无际的原野上散布着一座座井架.
Lofty derricks dot the landscape in an oil field.
高耸的井架点缀着油田的景色.
Steel derricks rose to meet our eyes as we drew nearer to the oil fields.
我们快到油田时看到了矗立的井架.
Here and there at long distances upon the canon sides rose the headframes of a mine.
峡谷两侧,一路过去,到处屹立着矿井井架.
The substructure is a box - on - box design for easy installation.
采用无棚绳前开口型井架,整体起升, 低位 安装,方便快捷.
The safety belt should be fastened when working on the derrick.
上井架工作必须系好安全带.
Hose - handing derrick are fitted port and starboard near the manifolds.
水管递井架是适合的口岸和右舷近的多头管.
Tail the drill pipe with rope as It'swings through the V - door.
因为钻杆经过井架大门坡道时来回摆动,要在钻杆上拴上尾绳.
The derrick escape line has to be function - tested.
井架工逃命绳要做功能试验.
Design rig's mast structure & rig's substructure.
油井的钻机的井架,珩架及底座结构件的应力分析 和 设计.
Hydraulic sequential circuit or mechanical mutual interlocking gear should be flexible mast to avoid misoperation.
伸缩式井架应设置液压顺序回路或机械互锁机构,以防止误操作.
The stress on these areas is twice higher than the mean stress of the mast.
这些部位都是井架的危险截面,其应力几乎高出大腿平均应力的1倍.
Oil drilling derricks are important constitutes of oil industry equipments, it belong to large bearing structure.
石油钻机井架是石油工业生产设备中的重要组成部分, 属于一种大型承重结构,对油田生产起着重要作用.
We soon realized that the black mark was Baba Grugru oil spraying air above the derrick.
不久我们就意识到那黑色的东西正是喷过井架射入高空的巴巴古尔古尔的石油.
Therefore, it has the advantages of safe and reliable operation and good economic benefits.
并且作业时不需立放井架, 不需上卸管扣. 具有操作安全可靠,经济效益高的特点.