mass point中文是什么意思

• 取样点

• mass    n. 1.块，堆，团。 2.群众，集团；〔the mas ...
• point    n. 1.尖头，尖端；尖头器具；〔美国〕笔尖；接种针，雕 ...
• point mass    质点质量
• material point, mass point, particle    质点
• mass point mechanics    质点力学
• dirac-mass point mass; dirac measure    点质量
• a mass of    大量的
• be a mass of    遍布着
• by mass    以质量计
• in the mass    总体上,一般地; 总体上,整个儿地; 总体上，整个儿地
• mass    n. 弥撒；弥撒的仪式[祷告、音乐]；弥撒曲。 a high [solemn] Mass (有烧香、奏乐等的)大弥撒。 a low [private] Mass (无烧香、奏乐的)小弥撒。 by the Mass 一定，的确。 say [read] Mass 作弥撒，念经。 n. 1.块，堆，团。 2.群众，集团；〔the masses〕群众；民众。 3.大量；大宗；众多；〔the mass〕大部分，大半；主体；总体。 4.【物理学】质量。 5.【军事】集团纵队，密集队形。 6.【矿物】体。 a mass of earth 一大块泥土。 a mass of letters 一大堆信件。 The masses have boundless creative power. 人民群众有无限的创造力。 a mass of manoeuvre 实施机动集团。 proper mass 静质量。 the masses 群众，大众。 be mass of 一团…，全身…，遍体…(He is a mass of bruises. 他遍体鳞伤)。 from the masses, to the masses 从群众中来，到群众中去。 in the mass 整个儿地；总体上，合计。 the (great) mass of... …的大部分。 to be at one with the masses 同群众打成一片。 vt. 使成一团；集中(力量等)；【军事】使密集。 vi. 集中，聚集。 massed body 【军事】密集部队。 massed formation 【军事】密集队形。 mass action 【物理学】质量作用；浓度作用。
• mass of    π-meson π介子的质量
• the mass    第一装甲师军歌; 弥撒
• the mass of    大多数,大部分; 大多数，大部分
• a on the point of    即将...的时候
• at a point with    在…之间
• at point    在点上
• at the point of    将要时; 就要的时候; 就要…时; 靠近, 接近
• at this point    这时候
• be point    损益分界点
• by point    偏点
• for point    追加分
• in point    编辑起点; 恰当, 中肯; 恰当的; 相关的
• in point of    关于, 就...而言; 就而言; 实际上,就事实而论; 说到，关于

• Last , the z - map mass point model is researched
  最后,对z - map点云模型进行了研究。
• Analysis of vibrational characteristics for an equipment composed of a mass point and a rigid body
  一种质点和刚体组合的非线性振动分析
• The effects of friction , damping and link flexibility on the system dynamic responses are considered . two mass points are approximately taken for the contact points
  基于hertz接触刚度并考虑阻尼效应的影响建立法向接触模型，采用修正的库仑模型考虑关节处的摩擦作用。
• In this thesis , based on pershing ii surface to surface missile , a new kind of ballistic missile was designed with an additional rocket engine , which can be ignited twice . firstly , aerodynamic computational models of missile body and warhead which reentry with supersonic are built according to the task requirements ; secondly , the propulsion system model of missile is built whose first two stages are solid rocket engines and the third stage is liquid - solid combined rocket engine . the nozzle and the shape of the engine are designed to meet the needs of the populsion project ; thirdly , the trajectory model of the mass point is built and a wavy trajectory is designed & optimized ; finally , the ability of a missile ' s breaking through defence is analyzed
  以美国潘兴导弹为原型，增加可两次点火的末级发动机，改装成具有跳跃能力的地地弹道导弹；首先，根据任务需求，建立了导弹的气动模型，并建立了弹头再入时高超声速气动模型；其次，建立了导弹推进系统模型，前两级采用了固体火箭发动机，第三级采用了固?液组合火箭发动机，并在总体方案要求下，对发动机喷管和外形进行了设计；第三部分，建立了导弹质点弹道模型，设计了一条跳跃式弹道，并对跳跃式弹道进行了优化设计；最后，对导弹进行了突防能力分析，从分析的结果可以看出，跳跃式弹道的突防能力比常规的抛物线弹道要强。
• Toward different surgery simulation request , we simplify human soft tissue to linear model , nonlinear model , or stiff / elastic model . using stiffness coefficient , damping coefficient , and mass point density to represent the characters of stiff / elastic , anisotropy , and non homogenous of soft tissue
  对应于不同的虚拟手术仿真要求，将人体软组织简化为线性、非线性、粘弹性物理模型，采用组织的弹性模量、阻尼系数、密度等物理特性表征软组织的粘弹性、各向异性、非均匀性等特性。
• In this dissertation , the re - entry vehicle can be seen as a rigid body system composed of a shell of the vehicle and internal moving mass points , by applying the newton - euler ’ s method , the dynamical equation of mmcrv are derived and the control mechanism is analyzed according to the dynamical equations . several influence factors on the dynamical response of mmcrv is analyzed in detail
  将壳体与内部活动质量体看成是一个刚体与质点系组成的多刚体系统,采用newton - euler建模方法完整地推导了变质心再入体的动力学方程,其结果显示了内部活动质量体移动对再入体姿态的影响。
• The main research is as follows : analyze and research the characteristic of the crank - connect rod mechanism of the single - cylinder internal - combustion engine , the mathematical model of three - mass point has been established and the program of its inertia force and moment has been designed
  研究工作主要包括以下内容:针对单缸内燃机活塞-连杆-曲柄机构的特点,运用运动学和动力学理论对其进行分析,建立了单缸内燃机的两质点和三质点模型,推导出单缸内燃机不平衡惯性力和惯性力矩的数学模型。
• This kind of high silica wrought aluminum alloy is provided with low density and well heat - stability , especially with the metallurgical structur ? similar with bearing alloy ? which is composed of dispersion distribution common silicon crystal hard mass point and the alloyed basal body is very fit for the components manufacture ? can bear small capacity moving load and friction load
  这种高硅变形铝合金具有密度小和200以下良好的热稳定性，特别是它的由弥散分布的共晶硅硬质点及合金化的相基体组成的类似轴承合金的金相组织、特别适合用于制做承受小能量动载荷和摩擦载荷的零件。

• mass pointとは意味：質点｛しつてん｝