This paper introduced in brief on the technical principle of hole digger in pressure and used safety method.
在有色冶炼企业 ,由于生产工艺连续性以及新水阀门易损坏关不严等原因 ,应用带压合叉技术显得尤为重要 ,本文简要介绍了带压开孔器的技术原理和安全使用方法。
Preparation Technology of Open-cell Polymeric Microcellular Foam;
开孔型聚合物微发泡材料制备技术
Synthesis of New Style Open-cell Flexible PU Foam for Reticulation;
用于网化的柔性开孔聚氨酯泡沫的制备
The result showed that noise reduction effect of the foam was the best when aniline polyether polyol A and low viscosity polyether polyol B were used, with the open-cell agent content was 3.
采用全水发泡工艺,通过对配方的调节,研制了一种具有较高耐压强度和较好降噪性能的聚氨酯开孔硬质泡沫塑料。
At the same strain,the absorbing energy of open cells with high density is highe.
对不同相对密度的两种胞孔结构———开孔和闭孔泡沫铝进行了单轴压缩试验,研究了相对密度对泡沫铝力学性能和能量吸收性能的影响。
According to the theory of classical mechanics, the problem of stress concentration of open cell of spherical cover end is always solved by approximate computing formula.
由经典力学理论,对于球形封头开孔应力集中问题,大都采用近似计算公式。
Improvement of Pipe Plug at Bottle of Spherical Tank and Suggestion of Opening Minimum;
球罐底部堵口整改方案探讨及开孔最少化建议
Shakedown Analysis of the Nozzlecylindrical Shell Intersection for Large Openings in Thin Wall Pressure Vessles;
圆柱形薄壁压力容器大开孔接管部位的安定性分析
Ultimate strength analysis of spherical shell with an opening for deep sea submersible;
大深度潜水器开孔耐压壳的极限强度研究
Buckling of honeycomb sandwich structures with cutouts and reinforcements;
含开孔和补强的蜂窝夹芯层合结构的屈曲分析
The laws that natural frequencies of rectangular plate with a cutout will change with size and position of cutout are obtained by analytic, numerical and experimental methods.
通过解析分析、数值分析和实验研究，得到了矩形板开孔时其固有频率随孔的大小和位置变化而变化的一些规律。
This paper is concerned with the stress concentration of cutout in transverse web for longitudinal stiffener.
本文研究为铺设纵骨而在舱壁板上开孔的应力集中 ,采用有限元方法对预先给定的结构进行应力分析 ,基于有限元计算结果给出了舱壁板典型开孔(参见ABS油船规范)的应力集中系数
A Discussion on the Perforation Coefficient in Standard of Strength Calculation for Centrifugal Drums;
离心机转鼓强度计算规范中开孔系数的讨论
Study on the Stress Concentration in Centrifugal Baskets with Perforations;
离心机转鼓开孔问题的研究
The optimum perforation and thenumber of layers have been designed.
从反射屏的开孔（或开缝）、反射屏的压皱、松散包扎、层数设计等方面研究了多层隔热体的包扎技术。