大孔隙

The porosity,max pore size and mechanical performance of the membrane were also characterized and it was foun...

并且对膜的孔隙率、最大孔径、力学性能和截留率进行了表征。

Secondly, by the analysis of influencing factors of collapsibility of loessal foundation, results indicated that at the basis of the grey incidence analysis on influencing factors of collapsibility of loessal foundation,the void ratio is the superior and steadily influencing factor of collapsibility at all events and other influencing factors will have different degree of influence according to the specific conditions of loess foundation.

通过分析影响黄土湿陷性变形的因素，对于湿陷变形因素的关联分析，可以看出土性指标对湿陷性的影响程度，孔隙比的影响比较突出，基本上可以认为是在土性指标对湿陷性的影响程度中最大的，其它指标会因土质含量、黄土的类型不同而影响各异。总之，本文应用灰色系统理论的关联分析法对应用广泛的工程实用模型变形计算方法做一些因素分析、进行反思，同时证明了弦线模量法计算沉降是值得大力推广的，弦线模量法计算沉降在将来的工程实践中必将带来更为可观的社会经济效益。

Results One case with transverse mesocolon pore hernia, one with obturator hernia and one with paracecal hernia were confirmed by exploratory laparotomy. There were six cases whose hernias resulted from the fall of export jejuna into import jejuna after Billroth II anastomoses in front of colons, five from the pelvic bottoms' peritoneal fissure and four from the fissure appearing between descending colon and lateral abdominal wall after Miles' operation, one from greater omental adhesion to sigmoidal wall after sigmoidostomy, and one from inflammatory adhesion on the basis of Meckel's diverticulum. The other 17 cases' hernias (48.7%) were caused by the fissure among celiac adhesive bands, peritonea, celiac organs, enteric walls and intestines.

结果 剖腹探查手术证实为横结肠系膜裂孔疝1例；闭孔疝1例；盲肠旁疝1例；毕Ⅱ式结肠前吻合术后输出段空肠疝入输入段空肠与横结肠系膜间隙6例；Miles术后盆底腹膜裂开所致内疝5例；Miles术后降结肠与侧腹壁形成的间隙致内疝4例；大网膜与乙状结肠造口肠壁粘连形成内疝1 例；1例在梅克尔憩室基础上发生炎性粘连形成腹内疝；因腹腔粘连带与腹膜、腹腔脏器、肠壁、肠与肠之间的孔隙改变形成内疝17例（48.7%）。

Soil noncapillary porosity of model two had the maximum in soil surface(11.11%) and decreased with soil depth increased.

仁用杏+紫花苜蓿和仁用杏+红豆草模式地土壤非毛管孔隙度随土壤深度有先增后减的趋势，在40cm层达到最大值(分别为：6.46%，5.65%)。

The proportion of reserves of low permeability gas reservoirs to nonproducing reserves is larger and larger in China at present. And the depletion way of production is used in low permeability gas reservoir currently, so the gradual drop of formation pressure during the exploitation will result in the deformation of rocks, which makes the reservoir porosity and permeability decline.

目前中国低渗透气藏的储量占未动用气藏储量的比重越来越大，而低渗透气藏一般都采用衰竭式开采，在生产过程中地层压力逐渐下降，导致储层岩石变形，使得孔隙度和渗透率降低，从而导致低渗透气藏开发效果变差。

It can avoid the oversaturation of zincate solution, improve thecharge-discharge properties, inhibit dendrites formation, increase discharge capacity and extendcycle life of zinc electrode effectively.

泡沫黄铜集流体还具有导电性好、孔隙率高、比表面大、重量轻、价格低廉、无污染等优点，是一种各项性能均衡，与银集流体相近的锌镍电池负极新型集流体。

Especially, it is found that there exists three types of relative permeability of water such as concave, convex to the water saturation ax and the reversed "S" pattern. The super-low permeability reservoir is sensitive to pressure, apparent with millipore undersaturation and water blocks. In this study, a new concept of irriducible undersaturation is brought up. And a new mode to describle the process of imbibition dynamics is used to reveal and confirm the mechanism of pinhole enveloping macropore as following: pendular ring of wetting phase gathers→it fills throat→it truncates nonwejting phase . The expression of pressure distribution and the equation of oil production are deduced under conditions of non-darcy linear seepage and non-linear seepage.

尤其发现水相相对渗透率曲线存在凹向、凸向含水饱和度轴及反S形三种形式；特低渗透储层的压力敏感性强，微孔隙的欠饱和及水锁效应显著，本文研究中提出欠束缚水饱和度的概念，引用一种描述渗吸动态即湿相液环聚集→充填喉道→截断非湿相的演化过程的新方法，更深刻地揭示和证明了&小孔包围大孔&机理；推导出了非达西线性渗流和非线性渗流条件下的压力分布表达式和油井产量方程。

The results reveal that stretch strength of polypropylene is stronger than that of polyvinylidene fluoride membrane and can be equal to that of polysulfone approximately.

另外还研究了过冷度对膜结构的影响，中空纤维外侧过冷度大于内侧过冷度是导致膜内侧比外侧孔隙率高、孔径大的主要原因。

Some conclusions are drawn which by analyzing the experimental data.There are seriate pores with continuous diameters in the coal, some of which are fracture-type.The pore volume of the coal is mainly...

分析表明，大同煤具有连续的完整的孔系统，且部分孔为狭缝毛细孔；孔体积主要由大孔和中孔构成，比表面积主要由小孔和中孔构成；随着颗粒粒度的减小，煤粉的孔隙结构发生变化，致使比表面积和孔容积均增大，平均孔直径减小。

The course of heat conducting in the drills has a detailed analysis first time, and it's pointed out that the loss of heat energy can be decreased through the reduce of distance between heating resistant element and inner casing of the subterrene drills, and thickness of the shell.

钻进压力对钻进速度的影响与地层中的空隙和孔隙有关，即地层越松散，钻压的影响越大，可以与热熔器的热功率一样，采用比钻压的概念，即在热熔器单位横截面积上的钻压值。

The concept of equivalent rotationally rigidity is offered and the formula of rotationally rigidity is obtained.

主要做了如下几个方面的工作：对伸臂位于顶部的单层框架—筒体模型进行分析，提出了等效转动约束的概念和转动约束刚度的表达式。

Male cats normally do not need aftercare with the exception of the night after the anesthetic.

男猫通常不需要善后除了晚上的麻醉。