质点

The liquefiable site was simplified as a double-degree-freedom model and the formula for calculating the reduction of horizontal natural frequency induced by liquefaction was attained.

将可液化场地简化为双质点模型，给出了液化导致场地水平自振频率下降的计算公式，推导出了频率下降率的下限值。

The morphology and microstructure of Ni-La2O3 codeposited films were studied by means of metallograph, electron probe microanalyzer ,transmission electron microscope and high resolutionelf3ctroli microscope.

用金相、电子探针、透射电镜及高分辨电子显微镜对Ni－La2O3复合电镀层的表面形貌及LaO3质点在镀层中的存在情况进行了研究。

At constant viscosity, by increasing the liquid flow rate, the liquid film's velocity is increased; at the same experiment condition, the frequency of the liquid film is same at the same radial direction; the air current has minimum effect on liquid film bottom flow velocity, while it has an obvious effect on liquid film surface flow velocity. The longer the distance between liquid film and the inlet, the lower the pulsatory frequency and longer the wavelength.

在粘度基本不变的情况下，随着液体质量流率的增加，液膜流动速度随之增加；在同一个实验条件下，沿圆管径向各质点的频率基本保持不变；气流场速度对液膜底层流动速度影响很小，对于液膜表面流动速度有着较大的影响；沿液膜流动方向，液膜的脉动速度逐渐增加，脉动频率降低，脉动波长变长，与报道的通过快速摄像得到的液膜发展趋势一致，证实用PDA研究液膜流动是可行的。

The interaction forces that may be present among the particles of a system give rise to internal torques.

系统内各质点间可能存在着的相互作用力，会产生内力矩。

The fracture surface of GH169specimen oxidized at 650℃ in air is covered with a dense and even oxide film,but in Ar, with an uncontinuous oxide particles.

在高温大气中的断口表面覆盖有致密而均匀的氧化膜；而在高温氩气中的断口表面则为不连续氧化物质点。

The electroactive species Fe2+ can be transported easily through the thin films of KVFe6 to the underlaying glassy C electrode surface to be oxidized directly at less pos. potential, and it can also be oxidized at the film at more pos. potential by means of redox sites in the film.

电活性质点Fe^3^+可穿透六氰亚铁钒薄膜在玻璃碳基体电极表面于较负电位处直接氧化，也可经VHF膜中氧化还原点位的媒介在较正电位处理膜-溶液界面及膜内部发生催化氧化。

An improved spring-mass model is proposed, by which 2D→3D transformation and simulation of garment are formulated unifiedly. The dynamic system of modeling and simulation is derived and solved using time differentiate method, with given composition and expression of internal and external cloth forces in the formulation. And then the simulation algorithm is described.

利用该模型统一建立了2D→3D映射和服装真实感模拟方程，给出方程中质点所受内力和外力的组成与表达式以及动态系统的推导和求解过程，并且描述了模拟的具体实现算法。

The unsmoothed characteristics of some living beings in soil have wear reduction and wear resistance function . The research benefits the revelation that a tungsten carbide reinforced Cu-base alloy wear-resistant composite coating was produced on mild steel by spark plasma sintering.Under the condition of two bodies abrasive wear ,the coating with the structure that hight hardness and good wear resistance WC particles embedding in tough fine Cu-base alloy matrix resist the abrasion wear and manifest the good wear reduction and wear resistance properties that the unsmoothed bodysurface of some living beings in soil have.

本研究受到某些土壤动物体表非光滑几何特征具有减磨、耐磨特性的启示，应用放电等离子烧结工艺，选取具有优良塑性的Cu基合金作为复合层基体，硬质点WC颗粒作为增强相，在碳钢表面形成WC\ Cu基合金耐磨复合层，在两体静载荷磨粒磨损条件下，高硬度、耐磨WC颗粒镶嵌在高塑性的Cu基合金基体中，共同抵抗磨粒的磨削，表现出某些土壤动物体表非光滑几何特征所具备的优良减磨、耐磨特性。

3D processing of the measured and virtual 450 geological sites was performed by using the EVS Pro software of C-Tech Co. and then a 1280 km^2 simulated morphology of paleo-lagoon floor and chenier in the Nandagang and Beidagang in the past ~5000 yean.

应用C-Tech公司EVS Pro软件的三维技术处理实测与虚拟的450个地质点，获得了约5000年以来、面积约1280平方公里的南、北大港古潟湖底板与贝壳堤的模拟形态。

When the porous solid skeleton is approximately taken as a micropolar medium and the fluid in the pores a point medium, the elastic pragmatic wave equations in a saturated porous micropolar medium are obtained from the results of the micropolar theory and those of Biot's pragmatic wave theory.

利用微极理论和Biot波动理论的研究成果，把饱和土中多孔固体骨架部分近似地视为微极介质，孔隙中的流体部分视为质点介质，获得饱和多孔微极介质的弹性波动方程。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。