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point mass是什么意思

中文翻译质点质量

网络释义

1)point mass,质点质量2)variable mass-point,变质量质点3)spot welding quality,点焊质量4)quality ideas,质量观点5)Solder Joint Quality,焊点质量6)joint quality,焊点质量

用法例句

    A theorem on kinetic energy for variable mass-point and formula of work of recoil internal forces are given and the reason of soft-rope query is discussed.

    给出变质量质点的动能定理和一对反推内力作功的表达式,并由此给出软绳问题的正确解释。

    For the requirement of spot welding quality in automobile industry,a fuzzy evaluation system for spot welding quality was developed and the software was designed.

    针对汽车行业对点焊的质量要求,制定了一种点焊质量模糊评判方案,并进行了软件设计。

    Inspection Method on Solder Joint Quality in SMT;

    SMT焊点质量检测方法

    Study on ANN-based Expert-system Applied to SMT Solder Joint Quality Control;

    基于神经网络的SMT焊点质量专家控制系统研究

    According to the characteristics that SMT solder joint quality is related to its 3-D geometrical shape directly, theory of solder joint shape was put forward.

    根据SMT焊点质量与焊点的三维几何形态直接相关的特点 ,提出了SMT焊点形态理论。

    Influences of laser parameters on soldered joint quality,and the application and development of diode-laser soldering were also discussed briefly.

    分析比较了固体激光软钎焊系统和半导体激光软钎焊系统的优缺点,介绍了采用半导体激光器作为热源用于无铅软钎焊的工艺特点和钎焊机理、激光参数对软钎焊焊点质量的影响因素,以及半导体激光软钎焊技术的应用和发展趋势。

    This artical approaches the dynamics of relative motion of a system with variable mass.

    本文研究变质量质点系的相对运动动力学。

    low-mass particle

    小质量质点,轻质点

    The quality or character of sound.

    音质音的质量或特点

    On the Enlargement of Fund Market:Seeking Quality Improvement based on Quantitive Accumulation;

    量变中寻求质变——对基金市场扩容的一点认识

    Control of Continuous Variable Entanglement and Transport in Quantum Dot;

    连续变量纠缠及量子点输运性质的控制

    Research on Application of Wavelet Transforms to Solder Joints Diagnoses;

    基于小波变换的焊点质量检测算法研究

    Structure Transition and Luminescence Properties of CdTe/CdS Quantum Dots

    CdTe/CdS量子点的Ⅰ-Ⅱ型结构转变与荧光性质

    heat absorbed by a unit mass of a material at its boiling point in order to convert the material into a gas at the same temperature.

    在沸点时一单位质量的物质为在同一温度下变成气体所吸收的热。

    Quantitative change is the necessary preparation for qualitative change.

    量变是质变的必要准备。

    Stresses of Quality Assurance Audits and Quality Assurance Inspections;

    质量保证监查和质量保证检查的重点

    The beef is a bit high.

    这牛肉有点变质了。

    Location Invariant Pickands-type Estimator and Asymptotic Properties of the Endpoint Estimators;

    位置不变的Pickands型估计量和尾端点估计量的渐近性质

    This is inferior in quality

    这个质量比较差一点。

    The Condition of Changing the Barycentric Energy of Motion by the Work of the Endogenous Force in Mass Points Group;

    质点组内力的功改变质心动能的条件

    Claim on quality originates from inferior quality of goods or quality changes.

    品质(质量)索赔是在货物质量低劣或是质量改变的条件下发生的

    yield mass curve

    裂变产额 质量曲线

    mass distribution of fission products

    裂变产物的质量分布

    Lorentz invariant electromagnetic mass

    洛伦兹不变电磁质量

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