大孔

Ordered macroporous SiO2 balls, exhibiting spherical structure with 200nm hexagonal-pores, have been successfully obtained by sol-gel templating method using the colloidal crystal balls consisting of the monodisperse modified polystyrene latex particles, which have been assembled into polymer opaline balls.

采用乳液聚合法合成了单分散改性聚苯乙烯乳胶粒，利用PS乳胶粒自组装制得胶体晶体微球，通过溶胶－凝胶模板法制备了有序大孔SiO2微球，通过SEM对改性PS乳胶粒、胶体晶体微球和有序大孔SiO2微球表面形貌进行了表征。

The machined big locating hole and the raw 3-25H7 cylindriform dowel hole′s distribution circle get spheroidicity after the four over dowel holes on a kind of annular gear having been machined and given heat treatment.

在加工内齿圈上的四销过定位孔时，热处理后，已加工好的定位大孔及未加工的3-25H7圆柱定位销孔的分布圆均变成了椭圆形，安装时，又将它们撑起恢复成圆形。

At the super-low permeable reservior sandstone of Fu and Yang in Daqing Oilfield, many pore throats exist a lot in the types of compacted and restored flakes and curved lamellas while the pore volume of micropore and the thin, compacted and shrunken throat that contribute little to flow take large scale in the total pore space. Thereof high filtrational resistance is caused by much trouble including high content of reservoir shale, serious sensibility to pressure at waterflooding, remarkable effects of undersaturation and water blocks in micropore. A method with laboratory experiment, theoretical confirmation and field application included was adopted to analyze the non-linear flow characteristics, to reveal the deep mechanism of pinhole enveloping macropore and to provide a new technology of improving the development effect. The outcomes aquired are as follows: Multiple cores with different low and super-low permeability were selected to perform seepage experiments by gas, water and oil. Three fields of flow were observed in the reservoir at different low and super-low core permeability. They are pseudo- elastic flow, transition flow and plastic creep flow. So the concept that there was no correlation of rocky absolute permeability with fluid properties that pasted itself was broken up. Two-phase seepage of water displacing oil in uniform super-low permeability shows that the two-phase seepage zone is narrow.

针对大庆油田扶、杨特低渗透油层砂岩孔隙喉道的大小和形态以压实再生型片状、弯片状喉道分布较广，压实、缩小型细喉道型，微孔不可流动的孔隙体积所占总孔隙体积的比例较大的特点；及储层泥质含量高，注水开发中压力敏感性强、微孔隙欠饱和及水锁效应显著，导致流体渗流阻力增大的问题，本文采用室内实验、理论推证和矿场应用相结合的方法，研究、分析了流体非线性渗流特征，更深刻地揭示出小孔包围大孔的机理及产生原因，并提供了改善开发效果的新的技术方法，取得如下成果：选择不同渗透率的低渗透、特低渗透岩心，进行了气、水和油单相渗流实验，揭示出当岩心渗透率不同时，油层内的流体呈现出拟弹性流变、过渡流变、塑性蠕变三种流变区，从而打破了岩心的绝对渗透率与通过岩心流体性质无关的观点；同类特低渗透岩心的水驱油两相渗流实验表明，两相渗流区较窄。

At carbonizing temperature between 425 ℃ and 720 ℃,the micropore volume is between 0.124-0.222 mL/g. Surface of the carbon is also observed by scanning electron microscopy. During thermogravimetric analysis,the cell wall of coconut shell disassembles to form macropore at μm level while its cellulose structure was retained.

本研究还探讨了椰壳炭的孔结构参数，炭化温度 4 2 5～ 72 0℃，其微孔容积为 0 。12 4～ 0 。2 2 2mL / g ，并用扫描电子显微镜观察了椰壳炭的表面形貌，椰壳在热分解时，细胞壁分解形成了微米级的大孔，并保留了椰壳的纤维状结构。

The porous Ti shows a three-dimensional open-cellular structure with two types of pores:one is inter-connection pore with uniform distribution;the other is small isolated smaller pore distributed in the wall of the open interpenetrated pores.

多孔钛具有三维连通的孔隙结构，其孔可以分为两种：一种是分布均匀、而且相互连通的宏观孔隙；另一种是分布在开放贯通的大孔壁上，孤立的近似球形的微孔。

Combined with this achievement,a dscription of the experimental process and test results of WBN-1 porous prilled ANFO use for the large-diameter longhole mining is made to promote a further application and development of large longhole mining method in China.

本文结合该研究成果，阐述了WBN—1多孔粒状铵油炸药在大直径深孔采矿法中的试验研究过程及试验结果，以期推动我国大孔采矿法的进一步应用和发展。

AIM: To review the 10 kinds of macroporous resin＇ s absorption of total flavnoids to screen out the one which could separate the Baicalin, Baicalein, Wogonoside, Wogonin simultaneously.

目的：考察10种型号的大孔吸附树脂对黄芩总黄酮的吸附性，优选出分离黄芩苷、汉黄芩苷、黄芩素、汉黄芩素的大孔吸附树脂。

Stem leaves elliptic to narrowly ovate, short strigose; pedicel 1-3.2 cm; calyx densely short strigose; corolla limb 3-4 mm wide; abaxial aperture of nutlets 1.5-2.5 mm

茎生叶椭圆形到狭卵形，；花梗1-3.2厘米；浓密的花萼短具糙伏毛；花冠瓣片3-4毫米宽；小坚果1.5-2.5毫米的背面的孔 5 Microula bhutanica 大孔微孔草

The results indicated that stable emulsions and macroporous structure were prepared by PELA, but hydrophobic poly and poly(lactide-co-glycolide) could only produce microcapsules.

大孔微球是一种具有网状大孔结构的新型基质，它不仅是动物细胞大规模培养[1]的关键，而且还可以应用于医

Objective: To optimize the technical parameters of separation and purification of total saponin from flower buds of Panax notoginseng by macroporous resins.

目的：研究大孔吸附树脂分离纯化三七花蕾中总皂苷的工艺条件及参数。方法：以三七花蕾总皂苷的吸附量和洗脱率为指标，筛选大孔吸附树脂，并研究所选树脂分离纯化三七花蕾总皂苷的吸附和洗脱条件。

The reasons of iron ions content overproof in grade Ⅱ desalting water system,such as variation water quality,contamination of regenerant , operation adjustment of pretreatment system and switching operation of bed were discussed.

对二级脱盐水系统中铁离子含量超标的原因，如来水水质发生波动、再生剂受到污染、预处理系统操作调整、床体运行切换等进行了论述。

You were hired to drum up new business, so go and do it.

公司雇你招徕新业务，你就做你的事好了。