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The surface morphology was observed by means of SEM. The EDX results show that the coating's sulphur content increase and cobalt content decrease with the sulphourea concentration increasing. A gradient structure with solphur content increase from inside to outside was formed.
用SEM观察镀层表面形貌,面能谱测试镀层的结果表明,随着镀液中硫脲浓度的升高,镀层中S元素的含量逐渐提高,钴元素的含量逐渐降低,镀层由内到外形成了S元素含量不断增加的梯度结构。
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Contact configuration under unlubricated condition were investigated, with the effect of the nano-La_2O_3 content on the friction and wear behaviors of the composite coatings to be emphasized. The worn surfaces of the composite coatings were analyzed using a scanning electron microscope and compared with t...
结果表明,在干摩擦条件下,随着La2O3纳米颗粒含量的增加,纳米复合镀层的摩擦系数降低,耐磨性能提高;La2O3质量分数为3.1%的纳米复合镀层的摩擦系数最低,耐磨性能最佳;纯Ni镀层呈现严重的粘着磨损特征,而纳米复合镀层主要呈现轻微磨粒磨损特征。
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Their lithologic types are dominated by vitric tuff vitric crystal tuff and medium-fine tuffy sandstone and their genetic types mainly belong to complicated type of the airborne-water-carried and the airborne type.
研究了华北中部太原组含煤地层中火山事件层的岩石学识别标志和分布规律。研究结果表明:含煤地层中广泛发育火山事件层。火山事件层的岩石类型以玻屑凝灰岩、玻屑晶屑凝灰岩和凝灰质中细粒砂岩为主。
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The geology research of carbonate reservoirs in Ordovician of Tahe oilfield showed that many large dissolved vugs and fractures were developed. The spread of the reservoir take on a very heterogeneous state. And the typical fractured-vuggy reservoirs was formed. According to the combination of the various spaces, the formation was divided into vuggy formation, fractured-vuggy formation and fractured formation. The research showed that development of the vug is relevant to the its position on the structure, the fractures, the water surface and the weathering surface. Multi-phase charge and recharge of the oil in the reservoirs resulted in the complexity of the fluid distribution. So the"Bottle Model"was brought forward to explain the movement of the water-oil contact. The special storage space and the complex fluid distribution lead to the unstability of the production and the complexity of the water cut. In order to explain the characteristic of the fracture-vug unit was brought forward and the basic principle and method of the partition of the fracture-vug unit was formed. The classification and evaluation of the units were performed according the reserve and energy. Based on the research of geology characteristic and the fluid flow in the reservoir the comprehensive numerical simulation plan of the fractured-vuggy reservoirs were established. Through the selection of the simulation unit, fluid flow type and parameter equivalent the triple media reservoir simulation model was established. Considering the practical application the model was resolved by the DKR decomposition conjugate grads method. Based on the fine reservoir description of Dsitrict IV of the Tahe oilfield the various space type were classified and combined together. The geology model of Unit S48 was constructed. Two typical single well model was established according to the geology and the dynamic phenomena. Finally the single well model and the Unit S48 were simulated by the triple media reservoir simulator. Via the local grid refinement and coarsening in the simulation good matchs were gained. Based on the results of the simulation the reserve distribution, percent of reserve produced in various space and the natural energy were analyzed. The fluid was storaged in the fractures and vugs mostly and more than 90% the produced oil came from the systems. The energy belonged to the active one. The results of simulation accorded with the fact and showed the validity and practicability the research and the simulator.
塔河油田奥陶系碳酸盐岩油藏的地质研究表明,其储层中发育着很多大型的溶蚀洞、缝,储层的平面展布呈现出极度的非均质性,形成了典型的缝洞型碳酸盐岩油藏,根据各种孔隙介质在储层中的组合,将储层分为了溶洞型、裂缝-溶洞型和裂缝型三类;研究表明溶洞储层的发育和构造位置、裂缝的发育、潜水面和风化面的位置等因素有关;多期充注的油气成藏模式导致了流体复杂的赋存状态,由此提出了所谓的&瓶子模型&,解释生产过程中油水界面的变化;特殊的储集空间类型和流体分布特征导致油田在开发过程中表现出很大的不确定性和含水变化的复杂性,为了合理的解释油气田开发过程中的动态特征,提出了&缝洞单元&的概念,并制定了&缝洞单元&纵横向划分的基本原则和依据及划分方法,并对&缝洞单元&进行了分类和评价;基于地质特征和流体在其中流动规律的研究,提出了缝洞型碳酸盐岩油藏的数值模拟综合解决方案,通过模拟单元的选择、流动类型和参数的等效,建立了三重介质油藏三维三相数值模拟模型,采用不完全LU分解预处理共轭梯度法进行了求解;在塔河油田4区精细油藏描述的基础上,将各种类型的孔隙空间进行了归类组合,建立了S48单元的地质模型;通过对油井生产动态进行分析研究,建立了两类和油井地质、生产动态相对应的单井模型;最后应用三重介质油藏数值模拟软件对单井模型和S48单元进行了数值模拟,通过局部加密和粗化等技术模拟流体流动规律,取得了很好的拟合效果;结合数值模拟结果,分析了各种介质中的储量分布、储量产出的百分比以及地层的能量,认为塔河油田缝洞型油藏中流体绝大多数储集于缝洞系统之中,所产出流体90%以上也来自于缝洞系统,其底水能量属于较充足的类型;模拟结果和油田实际情况符合较好,说明了地质研究和油藏数值模拟研究的正确性。
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The soft layer of ECC media usually possesseshigh saturation magnetization and also high demagnetizing energy density.
ECC介质由交换耦合的软磁层与硬磁层构成,它是通过软磁层与硬磁层的磁矩在磁化反转过程中的非一致转动来达到降低矫顽力的效果,而无外场时热反转仍为一致转动,因而能保持较高的热稳定性。
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The result shows that the corrosion resistance of nano-composite electrodeposits prepared under pulse current condition is obviously better than that under o...
结果表明,在脉冲条件下所制备纳米复合电镀层的耐蚀性明显优于其它电镀层,其原因是电镀层中复合有适量的纳米ZrO2颗粒以及脉冲电沉积工艺本身所致。
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By using of differentially drug release technology, various drug release profiles can be obtained by SOTs, and also, the weight of three layers of SOTs can be accommodated separately with unchanged dissolution profiles, thus, optimal formula which is suitable for tri-layer tableting machine can be achieved.
实验结果表明,通过异步释放技术的使用,可以使渗透泵制剂的释药曲线多样化,同时,该方法还可以在确保最终释药曲线不变的前提下,对三层渗透泵制剂中三个物料层的重量进行分别调节,从而得到最适合于三层压片机打片的三层渗透泵处方。
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It shows that the average thickness of the surface layer of crystals,the palisade and cone layer and the eggshell membrane are 20.8,220.8 and 62.5μm,respectively,which accounting for 6.8%,72.6% and 20.6% of the total thickness of the eggshell.There are many vesicular holes in palisade layer with an average diameter of(0.32±0.08)μm(n=30).The function of such holes may be of significant to air exchange.The shape of eggshell pore on the surface layer of crystals is round or ellipsis.The fracture surface of the pore is funnel-shaped.
结果表明:白冠长尾雉卵壳的表面晶体层、栅栏锥体层和壳膜层的厚度分别为20.8,220.8和62.5μm,分别占卵壳总厚度的6.8%,72.6%和20.6%;栅栏层有很多蜂窝小孔,其直径为(0.32±0.08)μm(n=30);卵壳表面有许多圆形或椭圆形的气孔,可能与胚胎发育过程中的气体交换有关,气孔横断面呈细漏斗状,在其上半部有颗粒状填充物。
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By altering the carbon chain length,substitutional group on carbon chain,monoamine cations or biamine cations,metal cation and halide anion,we could adjust the interlayer distance,linear alkyl amines conformation and the interaction between linear alkyl amines and metal halide octahedra.
通过改变直链烷基胺的碳链长度、取代基、单双胺以及无机层的金属离子、卤素离子,可以调控无机层的层间距、烷基链段的排列以及烷基链与无机层的作用力等。
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The countermeasure to lessen flow rutting is advanced and the design idea of coordinated combination design for asphalt layers is proposed. The use of binder course of graded broken stone not only decreases the trend of lateral flow deformation at high temperature but also reduces the lateral displacement of surface layer and middle layer.
给出了减少流动性车辙产生的对策;提出了沥青结构层协调组合设计的理念;指出了级配碎石联结层的使用不仅会减少高温下沥青上、中面层的侧向流动变形趋势,还会减小上、中面层的横向位移。
- 推荐网络例句
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As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.
每逢看到沃林顿那刚毅的脸,那乌黑、忧郁的眼睛,她便会相信,他一定作过不幸的爱情的受害者。
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Maybe they'll disappear into a pothole.
也许他们将在壶穴里消失
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But because of its youthful corporate culture—most people are hustled out of the door in their mid-40s—it had no one to send.
但是因为该公司年轻的企业文化——大多数员工在40来岁的时候都被请出公司——一时间没有好的人选。