偏心率

TIAN Wen-sheng（Chaigoubu Teachers School,Zhangjiakou 076150,China）Abstract:Taking account of δr≠0,through the equation of conservation of orbital angular momentum,orbital parameters equations on the mass change are re-deduced.

Ba星系统的星风吸积及污染因子刘俊红和仲池田文生摘要：用整个系统的角动量守恒条件代替切向动量守恒条件，且δr≠0，考虑轨道偏心率的高次项，推导了星风吸积质量及轨道参量变化方程。

It may be because the idiom 's technical tics and idiosyncrasies lend their productions a feel of eccentricity , and of endearing amateurism , qualities still largely alien to Broadway .

可能是因为成语的技术抽搐和特色借给他们的制作感觉的偏心率，以及可爱的业余，素质在很大程度上仍然陌生的百老汇。

In-plane stability capacity of I-section aluminum alloy bars under eccentric compressions was investigated with FEA program of ANSYS. The stability of the bars with different slenderness ratio and eccentricity was analyzed and the influence of initial crookedness and residual stresses on the stability was emphatically discussed.

动用ANSYS软体对常用的铝合金压型材偏心压杆的平面内稳定承载力进行了研究，分析了不同长细比和偏心率杆件的稳定性能，并讨论了残余应力与初弯曲对杆件承载力的影响。

Milankovitch orbit cycle consists of eccentricity, inclination and procession of equinoxes, which lead to palaeoclimatical cyclic transformation and form high frequency sequence, parasequence and beds with cyclic time of ten, four and two thousand years respectively.

米兰柯维奇天文旋回包括偏心率旋回、倾斜率旋回和岁差旋回，这几个轨道参数所驱动的古气候变迁，分别形成了周期为10万年(或40万年)、4万年及2万年的高频层序，即小层序组、小层序及小层单元。

In this paper,a numerical solution for radial journal bearings with liquid hydro-dynamic lubrication is analysed, numerical expressions for oil fiton pressure, bearing capacity , friction moment,and leakage at the bearing ends are derived,bearing capacity,flow rate, friction moment,and eccentric angle of the load under 14 different temperatures and 14 different load eccentricities are calculated.

采用数值法分析解算液体动压向心滑动轴承，推导了油膜压力、承载力、摩擦力矩和端泄流量等的数值表达形式，计算了14个不同温度点及14种不同偏心率下的承载力、流量、摩擦力矩、载荷偏位角，并通过AUTOCAD绘制了它们之间的影响曲线。认为偏心率及油温对承载力影响很大，设计时应加以限制。

The meaning of "the eccentricity of the gyroscope" is, I must admit, currently unclear to me.

何谓"偏心率的陀螺"是，我必须承认，目前我不清楚。

The visco?-elastic fluid hydrodynamic theory was applied to the wear-resistance experiment on sucker rods.The values of normal stress in suck string generated by visco?-elastic fluid and eccentricity brought out by sucker string were measured quantitatively.The partial abrasion of sucker string and tube in oil well was caused from the normal stress of visco?-elastic fluid.A module for bending analysis of sucker rod in cross direction and wire direction was developed.

大庆油田实施聚合物驱油以后，出现了抽油杆受力状况恶化、抽油杆柱严重偏磨的现象，为此开展了粘弹性流体水动力学理论和试验研究，得出了粘弹性流体在抽油机井筒内的流动规律及对抽油杆柱法向应力的影响规律，定量测出了粘弹性流体对抽油杆柱的法向应力值和抽油杆柱产生的偏心率。

The database consists of nodimensional data of load carring capacities, maximum pressures and their positions, flow factors, and power loss factors by solving full 2D Reynolds equation including oil feed features of 360°, 180°partial groove, and single oil hole, corresponding to a series of power law index, length/diameter, groove width/length, hole diameter/length, hole diameter/bearing diameter, eccentricity, angle between the attitude angle line and centre line of oil groove/hole, rotary, squezze, and oil feed pressure factors.

数据库中的数据通过求解全二维Reynolds方程和热平衡方程获得。数据库由对应于360°全油槽，180°半油槽和单孔的三类轴承的一系列的幂率指数，宽径比、槽宽／轴瓦宽、油孔直径／轴瓦宽、油孔直径／轴承直径、偏心率、偏位线与油槽中心线之间的夹角、挤压因子、旋转因子、进油压力因子的一系列的轴承无量纲的特性参数组成：油膜承载力、最大油膜压力及位置、流量系数和消耗功系数。

During this period, variance contribution rate of quasi 100 ka cycle is up to 37.44%, and quasi 100 ka cycle has a leading role.

P。也发现地球轨道三要素中的偏心率准100 ka周期2、1 ka岁差周期及55 ka、8.3 ka、3.5 ka非轨道准周期，偏心率准100 ka周期具有主导地位（方差贡献率达37.44%）；3尽管黄土记录的东亚夏季风100 ka周期的产生机制已有多种假说，古气候学界还是普遍认为它产生于某些尚不清楚的过程，有待进一步研究。

Because of the secular perturbation variations of the ascending node right ascension, the argument of perigee and the mean angle caused by the initial deviations of the semi-major axis, the inclination and the eccentricity are linear time-variant, then the active biases of the semi-major axis, the inclination and the eccentricity can realized the self-stabilization design of the elliptical orbit satellite constellation, and so the configuration stability will be improved.

通过初始偏差对椭圆轨道卫星的长期影响分析可知，轨道半长轴、倾角和偏心率的初始偏差对升交点赤经、近地点幅角和平近点角的长期摄动变化是线性的，因此通过主动偏置轨道半长轴、偏心率和倾角能够实现椭圆轨道星座构型的自稳定设计，从而提高其构型稳定性。

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％。