【摘 要】
：
山东省机井建设概况曲丰高（山东省水利厅济南２５００１３）建国以来，山东省机井建设取得了巨大成绩。截至１９９６年底，我省机电井总数达８９．８万眼，其中配套机电井７８．７眼，总机７２０万ｋＷ，井灌面积达到２２４万ｈｍ２，占全省有效灌溉面积
论文部分内容阅读
山东省机井建设概况曲丰高（山东省水利厅济南２５００１３）建国以来，山东省机井建设取得了巨大成绩。截至１９９６年底，我省机电井总数达８９．８万眼，其中配套机电井７８．７眼，总机７２０万ｋＷ，井灌面积达到２２４万ｈｍ２，占全省有效灌溉面积的４８％。机井工...
Construction of Shaft in Shandong Province Qu Fenggao (Shandong Provincial Department of Water Resources, Jinan 250013) Since the founding of the People’s Republic of China, great achievements have been made in the construction of shaft in Shandong Province. As of the end of 1996, the total number of electromechanical wells in our province reached 898,000, of which 78.7 were equipped with electromechanical wells, and 7.2 million were deployed. The well irrigation area reached 2.24 million hm2, accounting for 48% of the effective irrigated area in the province. Drilling ...
其他文献
“水利是国民经济的基础设施和基础产业”,这一观点表明了党中央和国务院对水利地位认识的飞跃,正越来越被全社会所理解和接受。那么水利在江苏这个经济文化大省又处在什么
字母是声母的代表字，一般认为是根据反切上字归纳而成的。但三十六字母依据何书的反切上字归纳而成、产生于什么年代，目前在学术界并没有确切的结论。本文利用数理统计的方法，将
目的 观察高表达的p73基因对肺腺癌细胞生长曲线以及血管内皮生长因子 (VEGF)、碱性成纤维细胞生长因子 (bFGF)mRNA表达水平的影响 ,探讨高表达 p73基因在肺腺癌血管生成中
There are many reports about the research on near-fault velocity pulses, which focus on the generation of velocity pulse and simplify the velocity pulse so as t
The Sr isotopic composition of foraminifera has been used in studies of chronstratigraphy and sedi- mentary geochemistry. However, it is difficult to sample for
岑港水库钢筋混凝土防渗面板总面积11074m‘，厚度35cm，沿坝轴线长278m，最大斜长41．gm，坡度为1：1．4，混凝土设计标号为200”，S6，在面板的混凝土中间设钢筋网；面板岸坡段每6m设一伸缩缝，河床
The specimens of 304 austenite stainless steel with the hydrogen attack bubbles or cracks were heat treated at 600℃ for 6h. The SEM and TEM observations on the
为研究风景游憩林中PM2.5浓度的变化规律及其对气象因子的响应,并分析不同林分对PM2.5浓度的调控作用,在2013年夏、秋、冬季于北京市奥林匹克森林公园内对北京4种典型结构风
今年入汛以来,长江发生了我国历史上罕见的洪水灾害。在同这场大洪水的殊死搏斗中,长江水利委员会(以下简称长委)一万余名干部职工战斗在数千里的广阔战场,顽强奋战,斗智斗