A mechanical device to position casing concentrically in the wellbore.
用于定位套管使其在井眼内居中的一种机械装置。
On the contrary, the design of Special Concentrically Braced Frames is saving and reasonable.
与此相反，特殊中心支撑框架的设计方法却是更经济、合理的。
The tubing die, Figure 10, extrudes plastic tubing concentrically around the emerging conductor.
螺纹模头(图10)，机械运行时塑料材料是围绕着导体延压出来。
The force to be measured must be applied concentrically along the central axis as far as possible.
所测量的力必须尽可能集中地沿着中心轴施加。
On the contrary, the design of Special Concentrically Braced Frames (SCBF) is saving and reasonable.
与此相反，特殊中心支撑框架的设计方法却是更经济、合理的。
You see there are many Earths that concentrically occur within the space that mankind perceives physical earth to occupy.
你会看到有很多个地球同心地出现在空间里，而人类只感知到了其所居住的物质地球。
This paper introduces a coaxially and concentrically combined coil, constructed by a solenoid and a pair of circular coils.
本文介绍一种由螺线管和一对圆形线圈构成的同轴、共心的组合线圈。
The different sizes of 6 kinds of steel shear walls convers 6 kinds of concentrically braces by the sectional area equivalent formula.
为此，本文基于刚度等效的原则，提出了一种带缝钢板剪力墙与人字形中心支撑的刚度替换计算方法。
A circular support frame (6) is horizontally attached to the rotation frame (4), concentrically in relation to the vertical central rotation axis.
圆形支承框架（6），该圆形支承框架水平安装在旋转框架（4）上，并相对于竖直中心旋转轴线同心；
Numerical computation is made in the various cases of simply and clamped support under uniformly and concentrically distributed load for the engineers.
并就均布与集中载荷作用下外周边简支与固支的各种情形，作了数值计算，以供工程人员参考。
For two different capacity reduction factors, calculate the reliability of concentrically compressed members strengthened with FRP using the JC method.
利用jc法对两种承载力折减系数下的FRP加固轴心受压构件进行了可靠度计算。
The behavior differences of buckling restrained braces frames (BRBF) and concentrically braced frames (CBF) have been researched by numerical examples.
采用数值手段，研究了防屈曲支撑框架和普通中心支撑框架在性能上的差异。
The alkaline rich intrusive rocks outcropped in the south margin of North China landmass (Henan section) concentrically distributing Lushi-Queshan belt.
华北陆块南缘(河南段)出露的富碱侵入岩类集中分布于卢氏-确山一线。
Eccentrically braced frames (EBFs) combines the strength and stiffness of concentrically braced frames (CBFs) with the inelastic behavior and energy dissip.
偏心支撑框架耗能梁段的长度对偏心支撑框架的侧向刚度、延性和耗能能力有很大影响。
Because concentrically braced frames is an excellent lateral resistance system, they are common system in steel structures or reinforced concrete structures.
中心支撑-框架结构具有较好的抗侧能力，无论在钢结构还是在钢筋混凝土结构中都是经常采用的一种结构体系。
The spiritual strong-force refers to the strong pursuit of will in total that one has deeply and concentrically in mind, consciousness, thinking and behavior.
精神强力是指主体最强烈、最核心的心灵、意识、思维、神韵所具的一种坚强有力的意向性追求的总和。
This paper presents the test results of 26 concentrically loaded long concrete-filled steel tubular columns with slenderness ratio ( L/D ) varying from 3 to 50.
本文报导了26根长细比（L/D）从3到50的钢管混凝土长柱轴心受压的试验结果。
The process for producing an annular, concentrically twisted bead cord (2) includes spirally winding side wires (12) around an annular core (11) to form a sheath layer (13).
该制造方法是通过围绕环形芯（11）螺旋地缠绕侧线（12）而形成套层（13）来制造环形同心绞股胎圈帘线的方法。
An annular, concentrically twisted bead cord is provided which can be reduced in weight while ensuring strength. Also provided are: a process for producing the bead cord; and a vehicle tire.
本发明提供了一种能够在保证强度的同时实现重量减轻的环形同心绞股胎圈帘线及其制造方法、以及车辆轮胎。
The present invention further relates to a method for producing a concentrically fanned, spatially structured bundle of light beams (422), using the optical deflection element (150) mentioned above.
此外，本申请还涉及一种使用所述光学偏转元件(150)产生同心发散的空间结构化光束(422)的方法。
A systematic research is done on the lateral behavior of braced steel frame system and the nonlinear behavior of concentrically braced frames (CBFs) and eccentrically braced frames (EBFs) is analyzed.
对支撑体系的抗侧力性能进行了系统的研究，对中心支撑体系和偏心支撑体系的非线性性能进行了简化分析。
A systematic research is done on the lateral behavior of braced steel frame system and the nonlinear behavior of concentrically braced frames (CBFs) and eccentrically braced frames (EBFs) is analyzed.
对支撑体系的抗侧力性能进行了系统的研究，对中心支撑体系和偏心支撑体系的非线性性能进行了简化分析。
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