偏心

This paper presents a new cementing research method pressure drawdown analysis method,which can be used to study the influence of deviation angle,flow rate,eccentricity and viscosity on displacement effictiveness in directional well and horizontal well.

压降分析法建立了相应的模拟试验装置，利用该方法可以研究井斜角、流量、偏心度和粘度因素对注水泥顶替效果的影响，对定向井固井有指导意义。

This paper analyzes from the theories and engineering examples to review rationality of the different torsion effect indexes, such as relative torsion effectθr/u, shear force ratioλbetween torsion and translation, eccentric angle of torsion.

本文从理论分析和算例考证两个方面，考查相对扭转效应θr／u、扭转与平动引起的剪力比值λ和楼层偏心扭转角α等不同扭转效应指标的合理性，研究不同指标的影响因素及它们之间的内在联系。

In addition, the effect of total hip replacement is highly correlated with acetabular anteversion angle, femoral head rotation center and eccentricity, and force.

全髋关节置换的效果与髋臼前倾角、外展角、股骨头旋转中心及偏心距、假体的受力密切相关。

Mercury's orbit is highly eccentric; at perihelion it is only 46 million km from the Sun but at aphelion it is 70 million.

水星的轨道高度偏心；在近日只有四千六百点〇〇万公里来自太阳，但aphelion是7000万美元。

The center of northern polar vortex is not at Arctic pole. The center of polar vortex mainly displace towards Asia, departure form Europe, but stronger trend to the Pacific....

极涡呈现偏心结构，极涡中心位置主要偏向亚洲大陆，偏离欧洲大陆，但有较强的偏向太平洋一侧的趋势。

In a word, this paper designed the XK35-17 rotary control head to solve the problems existing in the using of the rotary control head homemade, such as excessively abrasion and lapse early. The loads caused by the aslant installing of the preventer system were calculated.

总之，本文完成了XK35-17型旋转控制头的研制，解决了现场旋转控制头旋转密封装置存在的早期过量磨损或早期损坏的问题，计算了由于防喷器系统安装偏心摘要引起的侧向力，为轴承的选用提供了理论依据。

On the astrolabe, an off-centered circle represents the orbit of the sun—the ecliptic.

在星盘上，一个偏心的圆代表了太阳的运行轨道――黄道。

The problem of pushover analysis on asymmetric system was studied.

对Pushover方法应用于偏心结构的问题进行了研究。

In order to improve the measuring accuracy and efficiency, a high accuracy inspecting system for measuring the centroid and centroidal deviation of bullets based on three point method is designed. The working principle, relevant calculation formulae and the measuring equipment for measuring the centroid and centroidal deviation of bullets are presented, and the main factors affecting measuring precision are discussed. Then, a multiple measuring platform with automatic leveling and column structure autorotation of 90° is put forward.

为了提高其测量精度和效率，设计了基于三点法的高精度弹丸质偏心测量系统，介绍了测量原理、计算公式和测量设备，分析了测量误差产生的因素，提出了一种多测试平台和自动调平以及弹体自动旋转90°的设计思想。

Unsteady flow of power-law fluid in eccentric annuli with the inner cyinder reciprocating axially is studied in this paper.

本文研究了幂律流体在内管做轴向往复运动的偏心环空中非定常流的流动规律。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。