开孔,opening
1)opening[英]["??pn??][美]["op?n??]开孔
1.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
2.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
3.Ultimate strength analysis of spherical shell with anopening for deep sea submersible;大深度潜水器开孔耐压壳的极限强度研究
英文短句/例句
1.Finite Element Analysis on Hole Radius of Circular-Web Opening Steel Beams圆形开孔梁中开孔半径的有限元分析
2.openings through welded joints通过焊接连接处的开孔
3.untapped nut of iron or steel未开孔螺帽,铁或钢制
4.openings for pipe connections用于管子连接的开孔
5.circular openings not requiring reinforcement不要求补强的圆形开孔
6.welded reinforcement of nozzle opening接管开孔的焊接补强
7.musculus dilatator pupillae瞳孔开肌(musculus)
8.(biology) having a mouth or mouthlike opening.（生物学）有孔或似孔打开的。
9.Causing dilatation of the pupils.瞳孔开大的使瞳孔扩大的
10.A small opening or pore, as of a fruiting body.小孔小的开口或小孔，如子实体的
11.Fasteners--Split pin holes and wireholesGB/T5278-1985紧固件开口销孔和金属丝孔
12.The two holes furthest from the player are fundamental tone holes and next to them are two auxiliary tone holes.尼端开有基 音孔、辅助音孔各两个，
13.TO LF DOOR KEY CYL SWITCH到左前门钥匙孔开关
14.involute spline gear shaper cutter渐开线花键孔插齿刀
15.bolt or cotter-pin drill螺栓或开尾销孔钻头
16.Having no opening; not perforated.不开口的，不穿孔的
17.Open the air hole;the fire is dying down.把气孔打开，火要熄了。
18.TO RT DOOR KEY CYL SW到右前门钥匙插孔开关
相关短句/例句
cutout[英]["k?taut][美]["k?t,a?t]开孔
1.Buckling of honeycomb sandwich structures withcutouts and reinforcements;含开孔和补强的蜂窝夹芯层合结构的屈曲分析
2.The laws that natural frequencies of rectangular plate with acutout will change with size and position ofcutout 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。
3.This paper is concerned with the stress concentration ofcutout 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
3)open-cell开孔
1.Preparation Technology of Open-cell Polymeric Microcellular Foam;开孔型聚合物微发泡材料制备技术
2.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
3.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 theopen-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。
4)Perforation[英][,p?:f?"re??n][美]["p?f?"re??n]开孔
1.A Discussion on thePerforation 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
2.Study on the Stress Concentration in Centrifugal Baskets withPerforations;离心机转鼓开孔问题的研究
3.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。
5)open cell开孔
1.At the same strain,the absorbing energy ofopen 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。
2.According to the theory of classical mechanics, the problem of stress concentration ofopen 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。
6)opening[英]["??pn??][美]["op?n??]孔洞，开孔
延伸阅读
开孔分子式：CAS号：性质：(一)open pore 孔性固体中与外界连通的空腔和孔道称为开孔。不与外界连通的称为闭孔(close pore)。开孔与闭孔大多为孔性固体制备过程中形成的，有时也可在后处理过程中形成，如高温烧结可使开孔变为闭孔。(二)open cell 在软质聚氨酯泡沫塑料生产中，发泡过程后期，由于膜壁黏度较大，无法流动，同时弹性较低，无法承受膜壁的拉伸，从而造成气泡破裂，使气体逸出，这种现象称之为开孔。最有效的方法是调整催化剂或加开孔剂提高开孔率，将其混合在物料体系中，在泡沫塑料成型过程中影响体系表面张力，在适当的时候促使泡孔开孔化，防止制品收缩，改善柔性，提高制品的尺寸稳定性。其品种较多，可分为有机化合物、无机化合物和低分子量聚合物，如多胺，某些有机硅化合物，硝酸锆，多官能低分子量聚醚，低分子量聚苯乙烯等。也可采用机械方法开孔，开孔率高，软泡的回弹好。
