pressure density meaning in English
压块密度
Examples
- Liquified petroleum gases . determination of density . pressure density bottle method
液化石油气密度测定法 - Verification regulation of mud differential pressure density sensor
综合录井仪钻井液差压式密度传感器检定规程 - When the eccentricity distance is different , the distribution form of average pressure density in machining zone is given . in the lapping and polishing experiment , sic materials can be evenly removed by choosing reasonable process conditions and parameters , and the surface will convergence to prefect shape . this is helpful to the study on quantificational machining technologies of aspheric components
主要内容和创新点包括： 1 、根据平面研抛的成形原理和材料去除特点，建立了工件表面相对运动轨迹的数学模型，给出了不同偏心条件下加工区域的平均压强分布形式；在sic工件的平面研抛实验中，通过选择合适的加工条件和对工艺参数进行调整，能够实现表面材料的均匀去除，获得理想的工件面形，同时也为非球面确定量研抛提供工艺指导。 - The solution formula of dwell time is deduced by using the pulse iteration method and the smoothing fourier transition method , and the formula can be simplified referring to workpiece shape . according to the anastomotic status of the tool and workpiece surface , we present the new model of the inherent relation among local pressure density , removal rate , convergence ratio and residual errors , and the corresponding formulas are given . the forming cause of the edge effect in the polishing process is analyzed , and the means which reduces the edge effect is put forward
2 、针对计算机控制光学表面成形( ccos )的加工方式、误差收敛特点，研制了去除函数呈高斯分布的双转子结构研抛模；采用脉冲迭代法、平滑因子傅立叶变换法推导出驻留时间的算法，求解过程中根据工件面形的特点作了各种形式的简化；提出了工件表面和研抛模的吻合误差与局部压强、材料去除率、收敛比之间内在关系的数学模型，并推导出相应的计算公式；分析了边缘效应产生的原因，在加工过程中采用相对压力因子对去除函数进行修正，可以消除边缘效应的影响。