Precession basically is the change in the direction of earth's axis of rotation.

Disturbances to a Rotating Fluid with a Sphere Moving along the Axis of Rotation

旋转流体中圆球沿旋转轴运动产生的扰动

Use the principle of axis of rotation to calculate the conical cutter axis vector.

通过绕空间轴旋转原理计算锥形刀刀轴矢量。

A Dynamic Balancing Method for Determining the Axis of Rotation of Spinning Spacecraft

确定自旋航天器旋转轴的动平衡方法

An Estimation Algorithm of the Axis of Rotation from 3D Cloud Data Based on Line Element

基于线元几何的旋转面点云数据旋转轴提取算法

The part of the azimuth adopts a revolving pedestal, the part of the pitching combines a photoelectric sensor and the axis of rotation.

方位部分采用转台式结构，俯仰部分把光电传感器与转动轴合二为一。

The concentrated load is applied by changing the axis of rotation of the frame and fork to MPC multipoint restriction.

运用MPC多点约束方式代替了车架和平叉转动轴，并用这种方式对有限元模型施加集中载荷。

Using barium hydroxide octahydrate and urea as raw material, barium carbonate is prepared homogeneous precipitation method.

以八水氢氧化钡和尿素为原料, 采用均相沉淀法制备了碳酸钡粉体.

The determination of sulfur in thiolated chitosan resins with barium sulfate nephelometry was developed.

研究硫酸钡浊度法测定硫代壳聚糖树脂含硫量的方法.

A white pigment consisting of a mixture of zinc sulfidezinc oxide , and barium sulfate.

一种矿石,是锌的主要来源,含大量晶体状硫化锌.

Chemical properties of stability, with a total reduction of carbon barium sulfide.

化学性质稳定, 与碳共热还原为硫化钡.

Fine powders of barium ferrite were prepared by auto-combustion method.

采用自燃烧法制备了钡铁氧体微粉.

Expansion curve tunnel axis is the axis of symmetry, the tunnel axis at the stratigraphic sedimentation value.

扩展曲线以隧道轴线为对称轴，隧道轴线处地层沉降值最大。

The shape of ballistic reentry vehicle generally is axial symmetry, but its mass center may be departure from the axis of its symmetry.

弹道式再入飞行器一般为轴对称旋成体，但其质心可以偏离对称轴。

Results show that: ( 1) In the bending process of the I-shaped structural beams of bamboo, the axis of symmetry of the deflection value in the middle and both sides are diminishing symmetrical distribution, the deflection value of hinged fulcrum position is essentially unchanged.

结果表明：（1）竹质工字型结构梁受弯过程中，竹质工字型结构梁挠度值以中间为对称轴两侧呈递减对称分布，两端简支点位置的挠度值基本没有变化。

For a class of graphs, see Fig 1 denoted by A_n, with an axis of symmetry, we obtained its explicit expressions of characteristic polynomial and matching polynomial.

本文对一类具有对称轴的图A n（n≥0），得到了它的特征多项式及匹配多项式的精确表达式；同时还得到A（？）

First, we used the principal component analysis to determine the initial axis of symmetry, and then combined the moment of inertia to further pinpoint the accurate symmetry-axis linear equation.

首先，利用主元分析法初步确定对称轴；然后结合转动惯量法进一步精确定位对称轴直线方程；

Only the connected domain that passes through the central axis of symmetry could be considered to be is the region that the vehicle logo is at.

只有经过中心对称轴的连通区域才认为是车标所在的区域，实现车标精定位。

Some simulations show that the imaging results are in much good agreement with the true conductivity profile by array multi information on the axis of symmetry.

一些数值模拟表明，利用阵列多信息能很好地对复杂地层进行成象，且成象结果与真实电导率剖面分布吻合得比较好。

Undersize crankshaft main bearing journals. The important thing to know that it has an axis of symmetry-the optical axis.

尺寸小于标准的凸轮轴主轴承轴颈。重点是知道主镜有一个对称轴&光轴。

The member bearing compression in the truss could be regard as a battened column with the single axis of symmetry.

这种角钢桁架中的受压件在结构上是一个单轴对称缀板柱。