查询词典 developable surface

Application of pint-size surface casing in the Course of Drilling in Bamianhe Oilfield is successful by the contrast of before surface casing and the present pint-size surface casing ,as well as practical effect in production.

通过对以往钻井表层套管和目前小尺寸表层套管的对比，以及在实际生产中的效果分析，表明小尺寸表层套管在八面河油田钻井的应用是成功的，在满足地质、采油、作业需要的同时节约了钻井成本。

From dead-end to open-end, surface velocity increases gradually if the filter passage is shorter and surface velocity of both ends is large than that of middle section if the filter passage is longer. Compared with cylindrical filter, the distribution of surface velocity of conical filter is more uniform.

当过滤通道较短时，过滤元件表面速度沿过滤元件轴向逐渐增大；当过滤通道较长时，过滤元件两端的过滤速度比过滤元件中部的大；同圆柱形过滤元件相比，锥形过滤元件过滤速度的分布更为均匀。

Results from Monte Carlo experiments support the hypotheses that (1) fitting both surface and contour is superior, in terms of the quaality of the fit, to either surface fitting or contour fitting alone;(2) the shape of the surface is less likely to be misclassified when we use the proposed fused data fitting method.

藉蒙地卡罗方式的测验，我们得以证实：(1)线条及表面资料同时调适的结果，以调适的品质来看，会优於个别调适的方式；(2)利用对应光度及景深影像资料来侦测物体的形状，可以降低物体表面错误分类的发生。

SF and collagen films were treated by negative corona discharge, homothermal surface potential decay was tested to detect the charge stability. Result showed circums- tance humidity influenced severely the surface charge stability. There were polar groups on the surface after corona discharge, and hydrogen bonds existed between these groups. On the other hand, ATR-FTIR analysis indicated the conformation transition of SF was induced by strong electric field and a part of random coil conformation was converted into β-sheet structure.

采用自制的负电晕极化装置对丝素、胶原膜进行了表面处理，等温表面电位衰减法测试材料在不同环境中表面电位的变化，发现环境湿度对材料表面电荷稳定性的影响较大；XPS光谱分析表明材料表面有极性基团产生，这些基团之间有可能会形成氢键，同时ATR-FTIR分析表明丝素的构象在强电场的作用下发生了变化，由无规线团转变为β折叠结构。

In this paper, the principle of preparation of live vaccine with Saccharomyces cerevisiae by using the surface-display technique, the advantage of displaying protein on surface of the yeast cell, and surface-display of haemolysin from Vibrio harveyi on the yeast cells and their potential applications as live vaccine in marine fish are reviewed.

本文对利用酒精酵母细胞表面展示技术制备活疫苗的基本原理，在酵母细胞表面展示蛋白质的优点，以及哈维氏弧菌溶血素蛋白在酵母菌细胞表面上展示及其作为活疫苗的潜在应用作了综述。

Based on the results simulated by PRECIS (Providing Regional Climates for Impacts Studies), which is developed in the Hadley Centre for Climate Prediction and Research, changes of surface air temperature and precipitation under SRES B2 scenario in South China during 2071~2100 are analyzed. It is shown that, compared to baseline (1961~1990), surface air temperature in 2071~2100 would increase by 2~4℃, precipitation in summer would increase in the north part to 22°N, while the precipitation in winter would decrease in the whole areas of South China. The climate trend of the surface air temperature would be positive, however the climate trend of the precipitation would be negative, the occurrence frequency of extremely high temperature events and extremely heavy precipitation events would increase.

利用英国Hadley气候预测和研究中心的区域气候模式系统PRECIS，模拟分析基于政府间气候变化专门委员会 2000年发布的《排放情景特别报告》中设计的B2情景下华南区域2071~2100年的温度和降水量的可能变化，结果显示：2071~2100年均地面温度相对于气候基准时段（1961~1990年）上升约2~4℃；华南区域未来夏季降水量在22°N以北区域较气候基准时段增加，而以南区域减少；冬季降水则表现为华南区域较气候基准时段减少。2071~2100年华南区域的温度气候趋势系数为正值，年均降水气候趋势系数为负值。2071~2100年的高温事件和强降水事件的发生频率均比气候基准时段明显增加。

Results: 1Lightly selective solution appeared on the surface of anodizing samples. The sample's metal surface expanded and the thickness of oxide film is 1.72 times of the control samples. 2 The samples of degassing-preoxidation group formed very thick oxide film on surface and it was 23.32 times of the control samples, the relative content of O element in thick oxide film was higher than the other 2 groups.

阳极钝化处理的试片表面发生了轻度的选择性溶解，增加了金属的表面积，所形成的氧化膜厚度是空白对照组的1.72倍。2）除气加预氧化组则形成较厚的氧化膜，为空白对照组的23.32倍，而且氧化膜内氧原子的相对含量远远高于其他实验组。

High-resolution 〓H-NMR spectra were used to confirm the formation of the ICs, and XPS spectra were used to corroborate the formation of S-Au bonds. The significantly improved"reversible"voltammetric responses and the reproducible surface coverages of (2.4±0.2)×10〓 and (2.2±0.2)×10〓 mol/cm〓 obtained for SAMs of β-CD/C〓VC〓SH and α-CD/C〓VC〓SH, respectively, indicate that the intercalated CD can effectively dilute the surface viologen groups and weaken the intermolecular interaction, giving a wellordered and viologen-containing SAM with a determinate surface coverage.

高分辨〓H-NMR谱确证了预期包络物的形成；XPS谱确证了包络物电活性自组膜和S-Au共价键的形成；明显改善的&可逆&伏安响应和重现的紫精基团表面覆盖度[对β和α分别为(2.4±0.1)×10〓和(2.2±0.1)×10〓mol/cm〓]，表明嵌入的环糊精可有效地&稀释&紫精基团，在很大程度上减弱它们之间的相互作用，形成了完备的和有确定紫精覆盖度的包络物电活性自组膜。

In an ultrahigh vacuum chamber with a base pressure of 1 x 10-10 torr, we have used Low Energy Electron Diffraction and Temperature Programmed Auger to study the effect of adsorbates on the surface structure of Nb(111). That is, in O/Nb(111) systems, we observe the structure of the surface with LEED to see if any surface reconstruction occurs after annealing and analyze the structure.

在超高真空(约1 x 10-10 torr)的环境下，我们利用了低能量电子绕射(Low Energy Electron Diffraction， LEED)、可程式控温欧杰能谱(Temperature Programmed Auger， TPA)，来研究氧覆盖层对於铌基板的影响，亦即PO/Nb(111)表面系统中，再利用LEED观察是否有任何表面重构的现象发生并详细分析此结构。

To explore the mechanisms responsible for formation and variation of O3 at the surface, the variation characteristics of the surface O3 over Waliguan had been analyzed based on near eight years of continuous observations of surface O3 at Waliguan atmospheric baseline observatory from 1994 to 2002, combined with the Waliguan CO data and O3 and CO data of other three near high elevation globe background stations, Mauna Loa, Jungfraujoch and Izaa in the same period.

为探讨地面O3生成和变化机制，利用青海省瓦里关大气本底基准观象台1994~2002年的地面O3连续观测资料，结合同期瓦里关CO数据及3个相近高海拔全球背景站点Mauna Loa， Jungfraujoch， Izaa的O3和CO资料，对瓦里关地面O3变化特征进行分析。

Pachomius manual labour was organized as an essential part of the monastic life; and since it is a principle of the monks as distinguished from the mendicants, that the body shall be self-supporting, external work of one sort or another has been an inevitable part of the life ever since.

根据圣pachomius体力劳动组织作为一个重要组成部分寺院生活；以来，这是一个原则的和尚，作为有别于乞丐，该机构应自支撑，对外工作的这种或那种已一个必然的一部分，生活至今。

In order to study the effects of parametrical rolling on the ship movement and tilts, in allusion to ship's navigating in regular following waves, the equation of ship rolling motion is transformed into normal Mathieu equation by proper variable replacement when strong parametrical excitation in restoring moment varied according to sine or cosine wave.

为研究参数横摇对船舶运动和倾覆的影响，通过对船在规则波上随浪航行时，恢复力矩中出现的1个以正余弦规律变化的强参数激励项进行适当的变量置换，将船舶的横摇运动方程转换成标准形式的Mathieu方程。