【摘 要】
:
Foreign corporate involvement in the exploration and development of China’s petroleum resources began in 1982. In the 1990s, the exploration and development o
论文部分内容阅读
Foreign corporate involvement in the exploration and development of China’s petroleum resources began in 1982. In the 1990s, the exploration and development of coalbed gas has become a new investment arena for those same foreign oil companies. Coalfield gas, generally known as “gas,” is a type of natural gas found in coalbeds. The high-heat-value hydrocarbon mainly consists of methane and has the same chemical compo-
Foreign enterprise involvement in the exploration and development of China petroleum resources began in 1982. In the 1990s, the exploration and development of coalbed gas has become a new investment arena for those same foreign oil companies. Coalfield gas, generally known as “gas, ”is a type of natural gas found in coalbeds. The high-heat-value hydrocarbon mainly consists of methane and has the same chemical compo-
其他文献
锐钛矿型TiO2 多孔纳米薄膜可以从含聚乙二醇的钛醇盐溶胶前驱体中通过溶胶—凝胶法制备。涂层的形貌,如孔的大小和孔的分布可以通过聚乙二醇的加入量来控制。当聚乙二醇的加入量
目的探讨显微血管减压术(MVD)治疗神经源性高血压的临床应用价值。方法回顾性分析2010年1月至2015年7月于神经外科治疗的38例诊断为神经源性高血压的患者,均伴有面肌痉挛、三
起诉类法律文书,主要是指人民检察院或者当事人,在刑事、民事、行政诉讼活动中,依法向人民法院提起起诉,并引起第一审程序所制作的法律文书,它主要包括刑事起诉、民事起诉、
本文围绕海外华文教育应重视华文文学的作用这一论题,从华文科学习与华文文学的关系,华文教育的延续与华文文学的关系,未来华文教育课程的重塑与华文文学的关系三个方面,进行
一、现有文体系统的逻辑困惑自从创造了文字,人们就用它来写诗作文、著书立说、交流思想。几千年的文明历史积存了浩如烟海的文牍书籍。人们早就发现在这些文牍书籍中存在着
小尺寸金属氧化物半导体场效应晶体管(MOSFET)器件由于具有超薄的氧化层、关态栅隧穿漏电流的存在严重地影响了器件的性能,应变硅MOSFET器件也存在同样的问题.为了说明漏电流
搭建了感应读出方式紫外光子计数成像系统,详细介绍了该系统的组成、工作原理和分辨率性能测试.紫外光经过减光和滤光后入射微通道板,产生的光电子在微通道板内倍增后形成电
本文报道了30年间收治的小儿尿退粘膜脱垂15例。探讨了其病因及治疗方法,作者等认为本病是在先无缺陷的基础上,因腹内压增高而发生本病。而粘膜箍扎术是治疗本病最安全、简单而有效
以新型铱配合物黄光磷光染料bis[2-(4-tertbutylphenyl)benzothiazolato-N,C2′]iridium(acetylacetonate)[(t-bt)2Ir(acac)]为超薄层,制备了结构为indiumtinoxide(ITO)/N,N
病例患儿女,28天,第一胎第一产,足月顺产,因发现腹部包块2天入院。小儿吃奶好,无呕吐,不发热,大小便无异常,其母孕期健康无疾。查体:发育营养一般,心肺无异常,腹稍胀,下腹正中触及一10×8