当时所铸元宝形呈马鞍，两端圆弧，中间束腰，在形制上与南宋和金的银铤十分相近。
At that time the cast ingot shape is a saddle, two arcs, the middle waist, and the gold and silver collar is very similar in shape.
研究了冶炼工艺对钢力学性能的影响，特别是对钻铤用钢冲击性能的影响。
The effect of different steelmaking processes on mechanical properties of steel, especially on impact toughness of steel for drill color has been studied.
需要一根短钻铤。
不许在井架上排放用不着的钻杆和钻铤。
Do not leave pipe or collars that are not in use standing in mast or derrick.
给大钳装上与钻杆接头或钻铤相匹配的钳头，再装上安全锁簧。
Fit the rig tongs with the correct jaws for the drill pipe tool joint or the drill collar. Re-install the safety lock springs.
这里要接一根短钻铤。
当司钻正在上卸钻杆和钻铤时，内外钳工不要站在两个大钳之间。
Lead and backup tong-men should not stand between the two pipe tongs while the driller is making up or breaking out pipe or collars.
这是钻杆丝扣油，不能用在钻铤丝扣上。
The pull rod is screwed into the inside thread of the anchor head.
永远不要反转转盘为钻铤和管子上扣。
Never reverse rotary table into the DC or any tubular when making up connections.
钻铤必须是由非磁性物质做成的。
利用偏心钻具在旋转过程中的离心力和偏心短钻铤的偏重带的支撑作用，减小了钻头轴线倾角，从而减少了井斜。
By taking advantage of rotating centrifugal force and the supporting effect of eccentric short drill collar, we cut off the axis inclination of bit, and avoid well inclination.
井下稳定器安放位置调节器是斜井旋转钻井时实施井斜连续控制的专用工具，安装在钻头与钻铤之间。
The downhole stabilizer location adjuster, fixed between the bit and the drill collar, is a special tool for continual deviation control of a slant hole.
这是钻杆丝扣油，不能用在钻铤丝扣上。
与双感应测井类似的一种测井方法，用安装在钻铤中的电磁传播仪进行测量。
A log similar to a dual induction log but made by an electromagnetic propagation tool built into a drill collar.
石油钻铤螺纹联接失效是钻具失效的主要类型。
The failure of collar connection thread is one of the prime drill tool failures.
经现场5口井试验表明，不弯曲钻铤能够起到增大下部钻具组合刚度，控制直井段井斜的作用；
The on-site tests of 5 wells showed that the stiffness of lower drill pipe assembly was increased to control deviation in the straight hole.
以NC50型钻铤公螺纹作为研究对象，用有限元方法对加工有不同应力减轻槽的钻铤公螺纹接头进行了分析计算。
Take pin threads of NC50 drill collar as an example, Finite Element Method is used to analyze the different stress-relief grooves of pin thread connection.
研究了石油钻铤用钢的化学成分及其对性能的影响，并优化了热处理工艺。
In this paper, the effects of chemical composition of the steel for oil drill collar on its properties were studied and the heat treatment process were optimized.
不要在一单根钻铤上卸钻头，如果确实需要这样做，要用气动绞车拉住钻铤。
Do not make up or break out the bit on a single joint of DC. If this is absolutely necessary, always snub drill collar with the air tugger.
通过采用合适的对策，有效预防钻铤螺纹失效，从而保证钻铤螺纹的质量可靠性。
The correct countermeasures are taken to prevent the drill collar screw failure effectively, ensuring the qualitative reliability of drill collar screw.
介绍了钻铤钢管的结构特点、焊接修复的意义，以及窄间隙焊接工艺与设备。
The structural characters of steel pipe drilling rod, the signification of welding repair for the rods and the narrow gap welding process and equipment are introduced in the paper.
在钻具失效事故中，钻铤的疲劳失效尤为突出。
In the event failures of boring tools, the fatigue failure of the drill collar is especially prominent.
王铤，大历中为绵州刺史，诗一首。
Wang collar, large calendar for cotton prefectural governor, write a poem.
他们还没测量螺旋钻铤和无磁钻铤的长度。
They have not measured the length of spiral drill collars and monel collars yet.
当在钻杆盒上提起或放置直径大于6 1／4〞的钻铤立柱时，一定要用气动绞车拉住以保安全。
When picking up or setting down drill collar stands larger than 6 1/4" on the floor board, always snub with the air tugger."
钻杆和钻铤等管状螺纹联接件是钻探和石油钻井工业中的关键设备。
Drill rod and collar are key apparatus in drilling exploration and well drilling industry.
钻铤螺纹联结失效是钻铤失效的主要因素，在整个钻具失效事故中占很大比例。
The fatigue failure of drilling collar thread linking is a main factor of the drill collar failure, which accounts for a large proportion of the accidents in the drilling tool failure.
在到处寻找之后，我们发现那个提升短节在钻铤上接着。
After looking for the lift sub everywhere, we found it on the stand of drill co1lar.
因而钻铤内外螺纹的磁粉检测十分必要和重要。
As such, magnetic particle inspection for the screw thread of the drill collar is very necessary and important.
因而钻铤内外螺纹的磁粉检测十分必要和重要。
As such, magnetic particle inspection for the screw thread of the drill collar is very necessary and important.
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