1)Reaumuria trigyna长叶红砂
1.RAPD analysis on genetic diversity of endangered shrub Reaumuria trigyna;濒危灌木长叶红砂遗传多样性的RAPD分析
2.Analysis on the Population Genetic Diversity of Endangered Shrub Reaumuria trigyna by ISSR Markers;珍稀濒危植物长叶红砂种群遗传多样性的ISSR分析
3.Optimizing of ISSR Amplifying Condition and Primers Selection of Endangered Plant Reaumuria trigyna Maxim;濒危植物长叶红砂ISSR扩增条件的优化与引物筛选
英文短句/例句
1.Studies on Salt Tolerance Mechanisms of Reaumuria Trigyna Maxim Native to Alxa;阿拉善特有植物长叶红砂耐盐机理的研究
2.Seasonal changes of main water parameters of Reaumuria trigyna in different habitats长叶红砂主要水分参数随季节和生境的变化
3.The Physiological Responses of Endemic Plants Reaumuria Trigyna in Alashan Desert to Salt Tolerance;阿拉善荒漠区特有植物长叶红砂耐盐胁迫的生理响应
4.Studies on the Genetic Diversity of Rare and Endangered Shrub Reaumuria Trigyna in the Western Ordos西鄂尔多斯珍稀濒危小灌木长叶红砂遗传多样性研究
5.Studies on Resistance Mechanism of Cotton Germplasm to Pectihcphora Gossypiella and Tetranychus Cinnabarinus;棉花种质对红铃虫和朱砂叶螨的抗性机制研究
6.Effect on Reaumuria soongorica Emergence Treatment with 5 Plant Growth Regulator五种生长调节剂处理对红砂出苗的影响
7.Comparison of Leaves' Physiological Characters of Reaumuria soongorica in Different Geographical Population under Water Gradient水分梯度下不同地理种群红砂叶片生理特征比较研究
8.Study on Ecosystem Management of Broad-leaved Korean Pine Forest in Changbai Mountain长白山阔叶红松林生态系统管理研究
9.Effect of Red Clover Isoflavones on Growth Performance in Broilers红三叶异黄酮对肉鸡生长性能的影响
10.The Effect of High Temperature on the Development and HSPs Expression of 3 Different Strains of Tetranychus Cinnabarinus高温对三个朱砂叶螨品系生长发育及热激蛋白的影响
11.lithic arkosic wacke岩屑长石砂岩质杂砂岩
12.Study on the effects of soil temperature,soil moisture content,sowing depth,and sand cover on seed germination and seedling growth of Reaumuria soongorica and Zygophyllum xanthoxylum几种生态因子对红砂和霸王种子萌发与幼苗生长的影响
13.Any of several prized varieties of chicory, having red or red - spotted leaves that form globose or elongated heads.菊苣一种稀有的菊苣菜变种，叶有红点或叶呈红色，叶成球形或长形的头状
14.European mountain clover with fragrant usually pink flowers.生长在欧洲山区的一种具有粉红色花的三叶草。
15.long pinkish sour leafstalks usually eaten cooked and sweetened.长的、带粉红色的酸叶柄，通常烹饪、加糖后食用。
16.North American elm having rough leaves that are red when opening; yields a hard wood.生长于北美洲，叶面粗糙，初时呈红色，；木质坚硬。
17.pine of eastern North America having long needles in bunches of two and reddish bark.北美东部松树，两针一束长针叶，微红色树皮。
18.STUDY ABOUT DOMESTICATION AND UTILIZATION OF WILD BEE ON HERBAGE SEED BR(?)EDING FARM OF RED CLOVER红三叶草种籽场长木蜂的人工训育及利用研究
相关短句/例句
Reaumuria soongorica红砂叶片
1.Comparison of Leaves' Physiological Characters of Reaumuria soongorica in Different Geographical Population under Water Gradient水分梯度下不同地理种群红砂叶片生理特征比较研究
3)Reaumuria trigyna长叶红沙
1.Influence of Light,Temperature and Salinity on Seed Germination of Reaumuria trigyna Maxim.;光照、温度和盐分对长叶红沙种子萌发的影响
2.Methods We studied the morphogenesis of fissurate growth of Reaumuria trigyna by sequential slicing and determined changes in the content of ABA,IAA,GA3 and ZR using ELISA(Enzyme-linked immunosorbent assay).研究荒漠旱生小灌木长叶红沙(Reaumuria trigyna)劈裂生长过程的形态发生及其内源激素含量的变化。
4)Reaumuria trigyna Maxim长叶红沙
1.Study on Embryologenesis of Reaumuria trigyna Maxim;长叶红沙的胚胎学初步研究
2.The Dynamic Variety of Cellular Nutrion in the Seeds of Reaumuria trigyna Maxim During Germinating;长叶红沙种子在萌发过程中细胞内营养物质动态研究
5)Reaumuria soongorica红砂
1.Correlations between leaf δ~(13)C and physiological parameters of desert plant Reaumuria soongorica;荒漠植物红砂叶片δ~(13)C值与生理指标的关系
2.Effects of Sand Burial Depth on Seedling Emergence and Growth of Reaumuria Soongorica;沙埋对红砂幼苗出土和生长的影响
3.The seed breeding technique of the wild Reaumuria soongorica in Qinghai;青海野生红砂种子繁殖技术
6)broadleaved-Korean pine mixed forests on the Changbaishan Mountain长白山阔叶红松林
1.Modeling the diameter distribution of forest stands of broadleaved-Korean pine mixed forests on the Changbaishan Mountain: Forest stand modeling.;长白山阔叶红松林径级模拟研究——林分模拟
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.
