质点

一种质点系统平衡态的非线性稳定性

The Non-linear Stability of Equilibrium of a Mass Point System

轧制变形区金属质点加速度以及滑动率的探讨

Study on mass point acceleration and slip rate of metal in rolling deformation zone

在图6-1（c）中，质点的运动是用直角坐标系来描述的。

In Fig. 6-1 ( c ), the motion of a particle is referred to by a rectangular coordinate system .

在细化后的α'晶粒中心观察到了Al5Ti2Zn立方体成核质点。

Cubic nucleating Al_5Ti_2Zn particles have been observed at the centres of refined a ′ grains .

Ni－La2O3复合镀层中的质点弥散与组态研究

Dispersion and morphology of la_2o_3 particles in ni-la_2o_3 electrodeposited composite film

采用质点网格法（Particleincell），利用MAGIC软件模拟了场致发射的物理过程。

By using the electromagnetic particle in cell ( PIC ) MAGIC code , the process of field emission is simulated .

CeO2质点对Al2O3型氧化膜和膜／基体界面的原子结合能的影响

Effect of CeO_2 on Atomic Connection Energies in AL_2O_3-type Scale and at the Scale / Substrate Interface

镍基高温合金上含La2O3质点的NiAl型复合涂层的氧化行为

Oxidation behaviour of a composite nial-type coating containing la_2o_3 on Ni-base Superalloy

弥散La2O3质点的NiAl型复合涂层氧化行为的HREM研究

HREM study of oxidation behavior of NiAl type composite coating with dispersive la_2o_3 particles

光滑质点流体动力学（SPH）方法（综述）

Smoothed particle hydrodynamics ( SPH ) method ( a review )

计算时，以刚体弹道代替传统的质点弹道，利用多体动力学方法作理论分析，在solidworks和MSC。

While working substituting , conventional particle ballistic with rigid body ballistic , we do theoretical analysis with multi-body dynamic method , set up kinetic model of the system in solid works and MSC .

基于一个成熟的水动力模型ECOM（EstuaryCoastalOceanModel），对胶州湾潮波系统及其驱动下的标识质点运移规律进行数值模拟。

ECOM ( Estuary Coastal Ocean Model ) is used to simulate the tidal system and the tidally driven movement of water particles in Jiaozhou Bay , China .

用NS方程作为隧道通风的数学模型，采用三次插值伪质点法求解NS方程。

NS equation was adopted as the model of tunnels ' ventilation , and this model was solved by Cubic Interpolated Pseudo-particle Method .

首先，从波动方程出发讨论了散射P、SV波的相移和反射场中P波的质点运动；

Firstly , the phase shifts of scattered p , SV waves and the motion of the particles in the reflected field of p waves are discussed on the basis of wave equations .

分析认为，Fe、Si在工业纯铝晶粒细化过程中有双重作用，即促进型壁晶核的游离和增加α-Al在型壁形核的质点数目。

Analysis indicates that Fe or Si acts dual effect during refinement process , namely , accelerating segregation of nuclei from mould wall and increasing particle quantities of nucleants of α - Al .

Al-Zn-Mg-Cu系合金中ZrAl3质点的强化效应

Zral_3 particle hardening in Al-Zn-Mg-Cu alloy

采用透射电镜观察了铸坯加热温度和Mo对高磁感取向硅钢（Hi－B钢）析出第二相质点（硫化物＋AlN）的影响。

TEM observations were made of the influences of slab heating temperature and Mo on precipitated second phase particles ( sulfide and AlN ) in high induction grain-oriented silicon steels ( Hi-B ) .

阐述了爆破地震波的质点最大振速V是一个随机变量，它与Q、R没有一般意义上确定的函数关系，因此振动只能控制在某一区间。

The maximum velocity V in blasting vibration is a random variable , it has no definite function relation to Q and R in general meaning . So V only can be controlled in a confidence interval .

通过三维MEMS力学量传感器的三维参数测量和分解可以得到涌浪质点的实时运动速度和运动轨迹数据，从而为涌浪的微观形态研究提供了依据。

Real-time moving velocity and moving track can be obtained by measuring and analyzing three-dimensional parameters of three-dimensional MEMS mechanical quantity sensor , thus it can provide foundation for study of surge micro-shape .

本文根据Lagrange质点理论，在引入Lagrange函数的基础上，应用Hamilton原理，导出了等熵大气运动中的Ertel位涡守恒定理。

In this paper , Hamilton 's principle is used to obtain the conservation theorem of Ertel potential vorticity by introducing Lagrange function according to Lagrange theory .

采用TEM研究了弥散强化铜合金中Al＿2O＿3质点的制备方法，并观察了不同工艺下Al＿2O＿3质点的大小、形态和结构的变化。

A method of making of Al_2O_3 particles in dispersion-strenthening copper alloy has been studied by means of TEM and the size , morphology and structure changes of Al_2O_3 particles under the conditions of different technologies have been observed .

结果表明：微量硼的加入可以提高α相的数量，促使耐磨质点Mn5Si3的形成，调整α相及Mn5Si3质点的形态、分布和大小。

The addition of small amount of B increased the amount of α - phase , caused the formation of Mn_5Si_3 particles , and changed the shape , distribution and size of the α - phase and Mn_5 Si_3 particles .

本文对比研究了用喷射法加入CeO2弥散质点的低碳钢（含C0.20%wt）在空气中550～650℃恒温与循环氧化。

In this work , isothermal and cyclic oxidation of carbon steel ( containing 0.20 % wt C ) with and without CeO_2 dispersion added by jet injection are investigated at 550 °、 600 ° and 650 ℃ in air .

本文通过焊丝中加入细化剂Zr、Ti元素，增加焊缝金属的有效形核质点以及采用双脉冲MIG焊工艺方法来细化焊缝组织，提高焊缝的强度。

The microstructure of weld metal was refined and the strength of weld was improved by the inoculants Zr and Ti in filler wires increasing the effective nucleation particles of weld and adopting synergic pulsed MIG welding process .

最后，本文在三维ECOM模型下把质点跟踪法应用到了对长江口污染物扩散的数值模拟中。

Finally , under the three-dimensional ECOM model , the Particle-tracing Method is applied to the numerical modeling of the Changjiang Estuary sewage diffusion .

此外在未分解的AIF6~（3-）离子中存在比较稳定的AlF3由于质点间的交互作用还形成Al2F7~-离子。

In addition , there are some rather stable AlF_3 in the undissociated AlF_6 ~ ( 3 - ) complex ions , andAI_2F_7 ~ - ions are also formed due to the interactions among various species .

确定了一般晶粒取向3%Si-Fe中MnS质点对初次晶界的抑制失效的最低温度约为1000℃。

The lowest temperature at which the breakdown of primary grain boundary inhibition provided by MnS precipitates could occur was found to be about 1000 ℃ for common grain oriented 3 % Si-Fe .

二是基于物理的柔软物体自由变形的建模方法，通过将质点-弹簧模型加载到Bezier网格体上，通过变形网格来达到物体的变形。

Secondly , this paper uses a new modeling method that simulation based on physically soft-object free-form deformation . and it will let mass-spring model load into Bezier mesh , through deform the grid to achieve the deformation of object .

在1000℃以上的温度，质点对初次晶界的抑制作用的丧失可归结为该温度下小于Zener临界尺寸的质点的全部溶解。

The breakdown of the precipitates inhibition action upon primary grain boundary above 1000 ℃ might be ascribed to the complete dissolving of the precipitates below Zener critical size at this temperature .

几何光学就是零质量光子的质点力学，而波动光学则对应非零质量粒子的波动力学（非相对论的Schr¨odinger方程）。

The geometric optics is particle mechanics of massless photon , and the wave optics corresponds to wave mechanics of non-zero mass particle ( non-relativistic Schrodinger equation ) .