查询词典 cores

The surface of the post-core in the control groups were all oxygenized while those in the gilding groups had been oxygenized only near the margins of the cores and the upper 1/3 part of the post with uncontinuous and relatively thin layers.

肉眼观察：对照组桩核表面全部覆盖较厚黑色氧化层；镀金组近核边缘处和核下方桩颈1/3处有较薄散在的氧化层。

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。

The method is especially suitable for the cores that were unoriented in the process of drilling, but need to be oriented at present.

该方法特别适合于那些当初未考虑定向问题而现在又迫切需要重定向的钻井取心。

Under the effect of nature condition and social-economic growth condition of Hebei province, the urban system around Bohai Sea in Hebei province showing the characteristic as follows: Firstly, it is divided into two parts of north and south by Beijing and Tianjin. Secondly, the economic strength of the coastal areas is not strong although it near to Bohai Sea. Thirdly, the urban system is obviously draw by two cores and broken up by hinderland. Fourthly, there are great differences between spatial distributions of the cities; they distribute a disproportion in the whole.

1河北省环渤海城市体系是河北省城市体系的一部分，受河北省自然及社会经济条件发展的影响，河北省环渤海城市体系呈现以下特征：第一，被京津南北分割；第二，外环渤海，但沿海经济实力不强；第三，两核心牵引和腹地分割的空间格局明显；第四，城市空间分异明显，整体布局不均衡。

Zirconia/graphite compound mold core was prepared by the coating, in which the silicon sol was used as binder and zirconia was used as refractory materials. The application feasibility of metal particles as a coolant in the solidification process was studied, and the application of metal particles as subsidiary coolant in the liquid metal cooling of directional solidification were analyzed and studied in this investigation. The conclusions can be drawn as follows: 1 The zireonia/graphite compound cores fabricated by brushing coating which was prepared by making silicon sol agglutinated zirconia as a refractory material were casteded at 800℃and 1000℃respectively, and the results show that the strength of the mold core is strong enough to meet the requirement of practical casting.

本文研究了以硅溶胶为粘结剂，氧化锆为耐火材料来制备氧化锆／石墨复合型芯的制备工艺；并分析了金属颗粒作为冷却剂在金属凝固过程中应用的可行性、金属颗粒的冷却能力以及金属颗粒作为辅助冷却剂在定向凝固的液态金属冷却法中的应用，得出以下结论：(1)以硅溶胶为粘结剂，氧化锆为耐火材料来配制涂料，采用刷涂石墨型芯的方法来制备的氧化锆／石墨复合型芯经800℃和1000℃实际浇铸实验，结果证明型芯的强度足够满足实际浇铸要求。

Case designing and norm of assessment ascertaining are cores of the pattern.

案例的设计与编制和评分标准的确定是最为核心的两部分。

The valve channel structure models of molded lines of the valve clacks with various jaw openings were analyzed by using FLOTRAN CFD of ANSYS program, the flow coefficients of various valve cores with different jaw openings were derived.

本文用ANSYS程序中的FLOTRANCFD对几种阀芯型线在各开度下构成的阀道结构模型进行分析，得出不同阀芯在各开度下的流量系数。

The world soon to be largely populated by men who would eat your children in front of your eyes and the cities themselves held by cores of blackened looters who tunneled among the ruins and crawled from the rubble white of tooth and eye carrying charred and anonymous tins of food in nylon nets like shoppers in the commissaries of hell.

这世界忽地兴起一大帮眼睁睁当着你的面就能吃掉你儿子、女儿的人。而各城中，结队而行的劫匪穿梭于各处废墟，踩踏在磨白的牙齿、炭色而模糊的眼珠上，用尼龙网裹着不知哪儿来的食物罐头行走着，就如来自低于的采购买办。

This part is one of the hard cores.

这也是本文的核心部分之一。

Chapter 3、Chapter 4 and Chapter 5 are the cores of this thesis.

第三、第四和第五部分是文章的核心部分。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。