1)zircon sand锆英砂
1.X-ray fluorescence spectrometry for determination of major and minor components in zircon sandX射线荧光光谱法测定锆英砂中主次成分
2.This paper introduced the import state for zircon sand and its concentration in China in 2005,2006,and Jan.介绍了2005年、2006年及2007年1 ̄4月我国锆英砂及其精矿的进口情况。
3.The market price trends and influential factors of our country zircon sand in 2005 and Jan.介绍并分析了2005年和2006年1~8月我国锆英砂市场价格走势及其影响因素。
英文短句/例句
1.Analysis of Import State for Zircon and Its Concentration in China in Recent Tow Years;近两年我国锆英砂及其精矿进口情况分析
2.X-ray fluorescence spectrometry for determination of major and minor components in zircon sandX射线荧光光谱法测定锆英砂中主次成分
3.The general technical specifications on silicon carbide and zircon ceramic infrared heaterGB/T4654-1984碳化硅、锆英砂、陶瓷类红外辐射加热器通用技术条件
4.Imports and Exports of China Zirconium Ores in the First Half of Year 20092009年上半年中国锆矿砂的进出口情况
5.zircon web offset printing machine锆英石转轮版印刷机
6.Study on Corrosion Resistance of Zircon AZS-Bonded Ramming Mix Used for Glass-Kiln电熔锆刚玉结合锆英石捣打料抗蚀性能的研究
7.Chemical analysis methods for zircon refractoriesGB/T14350-1993锆英石耐火材料化学分析方法
8.Development of New Zirconium Alloys for PWR Fuel Rod Claddings压水堆燃料包壳新锆合金的发展(英文)
9.OPTICAL PROPERTIES OF Dy~(3+)-DOPED FLUOROZIRCONATE GLASSES掺镝的氟锆酸盐玻璃的光谱(英文)
10.The Effect of Zircon on the Performance of A_2O_3-SiC-C;锆英石对A_2O_3-SiC-C捣打料性能的影响
11.Effect of La_2O_3 Addition on Synthesis of SiC-ZrO_2 Composite with Zircon as Starting MaterialLa_2O_3对锆英石合成SiC-ZrO_2复合材料的影响
12.LOW TEMPERATURE SYNTHESIS OF HIGH-PURITY ZIRCON POWDER BY A HYDROTHERMAL METHOD低温水热合成高纯硅酸锆粉体(英文)
13.Research on the Effect of Magnesia-zirconia Powder and Environmental Protection Pitch on Properties of the Low Carbon MgO-C Brick;添加镁锆砂及环保沥青对低碳镁碳砖性能影响的研究
14.U-Pb ages of the Paleozoic sandstone detrital zircons and their tectonic implications in the Tabeaksan basin,Korea.韩国太白山盆地古生界砂岩碎屑锆石U-Pb年代及其区域构造含义
15.Contrast of Magnetic Susceptibility of Silica Sand and Silica Raw Material and Its Significance石英砂与石英砂原料磁化率的对比及其意义
16.Three kinds of state of arscnopyrite are developed at the deposit, i. e. corse-grained arsenopyritc, veinlet arsenopyrite and arsenopyrite-bearing quartz vein, and fine-grained disseminated arsenopyrite.毒砂可划分为大颗粒毒砂、细脉状及毒砂石英脉中的毒砂和细粒浸染状毒砂三种性状.
17.Research on Influence Factor Originated from Granularity of Starting Materials in Synthesis of Zircon Powders by High Temperature Solid State Reaction原料粒度对高温固相法制备锆英石粉体的影响
18.Capabilities of Zircon as Waste Forms for Immobilizing Simulated Trivalent Actinides锆英石基三价锕系模拟核素固化体的性能
相关短句/例句
zircon[英]['z?:k?n][美]['z?kɑn]锆英砂
1.The result shows that:the corrosion resistance of cement clinker of the specimen that is addicted with zirconcia is the best,ZrO2 and CaZrO3 could constrain the corrosion and penetration of the cement clinker;the corrosion resistance of the specimen that is addicted with Zr(OH)4 gel is better.结果表明:引入单斜氧化锆的试样抗水泥熟料侵蚀性是最好的,ZrO2和CaZrO3可以起到抑制水泥熟料侵蚀和渗透的作用;引入Zr(OH)4凝胶的试样抗侵蚀性也较好;而引入锆英砂的试样由于试样中M2S和水泥熟料中CaO反应生成低熔相Ca3Mg(SiO4)2,直接导致了方镁石的侵蚀,所以其抗侵蚀性是最差的。
3)zircon placers锆英石砂
4)Zircon grain锆英砂晶粒
1.Blast wave treatment for γ-Al2O3 agglomerate and Zircon grains was analysed.分析了两种不同类型粉体──γ-Al2O3团聚体粉末和锆英砂晶粒的冲击处理结果。
5)zircon sand锆砂
1.Research and practice of the production technologies for small and medium sized cast steel parts with resin coated zircon sand;锆砂覆膜砂生产中小型铸钢件工艺的研究与实践
2.Aims To study the technical properties of zircon sand and PEPSET nobake sand, so as to solve the cast problems caused by the quality of sand.目的 研究锆砂 /PEPSET树脂自硬砂工艺性能 ,用于解决复杂铝铸件由于型砂质量所带来的铸造问题 。
3.of zircon sand in our country were reported and reviwed.报告和点评了我国锆砂进出口、生产、消费、价格和应用等方面的情况和问题。
6)silicic acid (h4sio4), zirconium(4++) salt锆石,锆英石
延伸阅读
油井防砂和清砂 对疏松油层进行层内胶固,在井筒内下筛管防止油层砂进入井内,以保证油井、注水井的正常生产,称防砂。 防砂 胶结疏松的砂岩颗粒随油、水进入井筒或携带至地面,会冲蚀、磨损、堵塞深井泵和管线以及地面设备,或沉积于井底,堵塞油层,使油井减产或停产;甚至油层坍塌,挤毁套管,导致油井大修或报废。采油时应根据生产动态、砂样分析及声波测井等资料,及时了解出砂原因、层位及性质,采取有效的防砂措施。防砂措施有筛管滤网和化学胶固两类,前者适用于各种完井方式,应用较广,后者主要用在套管射孔完成的井。通过试油、试采已证实出砂的油层,应考虑防砂完井。 筛管滤网防砂 也称机械防砂,将多缝筛管固定在带孔的钢管上,下至出砂层段并用携砂液将一定粒径的砂粒循环填充于筛管外,靠管外砂粒所形成的桥拱,滤阻油层出砂。对油层单一、无水、气夹层的井,可采用先期防砂。即油层部分用扩眼钻头扩眼后,再下入筛管填砂(见图)。对多层合采或有水、气夹层的井,用射孔完井。清洗套管和炮眼后,再在套管内下筛管填砂。筛管的结构,从割缝到外包金属网或预填砾石,发展到用有机或无机材料预制滤管。目前多用梯形截面的不锈钢丝点焊成强度高、渗滤面大、耐腐蚀的金属绕丝滤管。此法要求根据砂样粒度分析资料,选定筛管缝宽及填入砂粒的直径。 化学防砂 向出砂油层注入一定量的化学胶结剂,将油层砂子胶固在一起。常用的胶结剂有树脂类(如酚醛树脂、环氧树脂等),有时也用水泥类材料。要求胶结剂在固结时体积收缩,或加入增孔剂,造成一定的渗透性,以尽量减少对产量的影响。对已经大量出砂的油层,用下列方法形成有渗透性的人工井壁:①将砂与胶结剂按比例混合后,挤入地层;②预先向出砂层填砂,再将原料如甲醛和苯酚以及固化剂按序挤入地层,在地层条件下合成树脂;③石英砂外包一层树脂,在未完全固化前挤入地层,在油层温度条件下固化;④用N2作载体把SiCl4蒸气引入油层,使之分解,析出的Si对疏松砂子起胶结作用。化学防砂的优点是可用于同井多油层防砂,不缩小井眼;缺点是成本较高,易降低出砂层的生产能力,对于油井先期防砂或注水井防砂,效果较好。 清砂 清除井底沉砂,一般下入油管,用洗井液循环冲洗,带出地面。炮眼内积砂,用专门的洗井封隔器分段冲洗。井下深井泵等设备内的积砂,须将设备起出地面,检查清理。 参考书目 T. O. Allen & A.P.Roberts, Production Opera- tions,Vol.2,2nd ed.,Oil & Gas Consultants Inter-national,Tulsa,1982.