查询词典 porosity

The different solidification process of the die were simulated by using casting software Hua Zhu CAE, the effect of the different pouring temperature, riser position and size on shrinkage and porosity was analyzed, the experiments were done to observe the metallograph and detective the performance of the mold.

使用华铸CAE对不同工艺的凝固过程进行有限元模拟，分析不同的浇注温度以及浇注系统的位置和大小对铸件缩孔、缩松的影响，通过实验观察铸件金相组织，测试实验样品的性能，最终确定优化后的铸造方案。

The thin layer of microbiotic crusts with lower bulk density, lower density, higher soil porosity and higher water-holding capacity will markedly influence the soil hydrological processes, such as the processes of penetration, the interception, the redistribution and the evaporation of precipitation, which will threat the soil-water environment in Shapotou area.

容重较小、比重低、孔隙度高和持水性能强的薄层微生物结皮对土壤水文过程产生了深刻的影响。在沙坡头地区，微生物结皮改变了降雨在沙丘土壤中的渗透、再分配、拦截和蒸发等过程，并最终导致固定沙丘土壤水环境的恶化。

The result has demonstrated that the established model mentioned in this article can be used to analyse the rule of reservoir crustal stress, rock morphotropy, fluid pressure, porosity and permeability alternation with time and interspace and its effect to production. The improvement of fracturing stimulation mechanism has settled a more complete theory base for optimizing fracturing program.

结果说明，本文所建模型可以用于分析油藏地应力、岩石应变、流体压力、孔隙度、渗透率随时间和空间的变化规律及对生产的影响，进一步完善了压裂增产机理，为压裂方案优化奠定了更完善的理论基础。

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 grain granularity distribution of system is changed when the amounts added is above 10%, this results in the imperfect and noncontinuous structure, meanwhile, new structure has not formed, the porosity of sample increases, intensity decreases.

加入量超过10％时，由于改变了体系的颗粒级配，造成原结构骨架不完整，不连续，而新的结构骨架还未形成，试样气孔增多，强度降低。

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。

Therefore,when the geology risk assessment is done,the geology risk index as effective thickness,porosity,permeability,abundance,exploration maturity,heterogeneity,exploration success ratio and gas combination are selected.Using the gray cluster method,this paper conducts the synthetic evaluation and research on geological risk taking 7 well blocks in a certain region as an example and according to geology risk assessment characteristics,which can quantize and display the quality of nonproducing reserves in each area.

为此，在对地质风险评价时，选取了有效厚度、孔隙度、渗透率、丰度、勘探成熟度、非均值性、勘探成功率、含气组合等8个地质风险指标，以某油田某地区的7个井区为例，结合地质风险评价的特点，运用灰色聚类法对其进行地质风险综合评价研究，使以各个区块为单元的未动用储量的优劣得以量化表现。

Through research it is shown that this method is an effective method of predicting oolitic beach reservoir porosity,being of important practical value.

研究结果表明，本方法是一套预测鲕滩储层孔隙度的有效方法，具有重要的实用价值。

The medium-grained sandstones and medium-fine-grained sandstones form good reservoirs and the poststones medium reservoirs, while siltstones form poor reservoirs and pelitic siltstones poorest reservoirs. Sand bodies mostly develop in sand-flats, tidal channels and distributary channels of braided stream delta microfacies. The reservoir rocks of sand-flat and tidal channel are best with the physical property. Diagenesis such as compaction, cementation and dissolution has strongly reformed the reservoir rocks and the late dissolution has greatly improved their porosity and permeability.

中粒砂岩、中细粒砂岩属好储层，细粒砂岩属中等储层，粉细砂岩，粉砂岩属较差储层，而泥质粉砂岩则属差储层；砂坪、潮道和辫状河三角洲分流河道微相中的砂体最发育，它们决定了储集岩的发育、分布及原始物性条件；砂坪和潮道储集岩的物性最好，辫状河三角洲分流河道储集岩的物性次之，砂泥混合坪、辫状河三角洲分流河道间储集岩的物性较差；成岩作用对本区CⅠ油组的储层有强烈的改造作用，尤其是较晚期的溶蚀作用对岩石的储集性能有明显的改善，对本区CⅠ油组中孔高渗透储层的形成有很大的贡献。

After fired at 1600℃, with the increase of zircon addition the bulk density of the samples increases while apparent porosity decreases. When zircon addition is 4%, the strength is the best, and the photomicrograph of the sample exhibits a densely packed microstructure, with larger and better developed grains of periclase and spinel. Meanwhile, the direct bonding of solid phases is reinforced.

在1600℃热处理下，随着w(ZrSiO4)的增加，试样的体积密度增大，显气孔率变小，试样力学强度在w(ZrSiO4)为4%时达到最大值。w(ZrSiO4)为4%的试样整体显微结构致密，固相直接结合程度提高；并且方镁石和尖晶石晶粒的晶粒尺寸粗大，晶粒发育比较完整。

I am accused of being overreligious," she said in her quiet, frank manner,"but that does not prevent me thinking the children very cruel who obstinately commit such suicide.""

客人们在卡罗利娜·埃凯家里，举止就文雅一些，因为卡罗利娜的母亲治家很严厉。

Designed by French fashion house Herm è s, this elegant uniform was manufactured in our home, Hong Kong, and was the first without a hat.

由著名品牌 Herm è s 设计，这件高贵的制服是香港本土制造，是我们第一套不配帽子的制服。