查询词典 large area
- 与 large area 相关的网络例句 [注:此内容来源于网络,仅供参考]
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However, during borehole grouting pile construction of the present, round section piles are used universally. Generally speaking, the boreholes are drilled by a large diameter round piling bit. Because of the restriction of factors of the mud pumps, and drilling equipments, and drilling technique, it would result in such problems as fol lowing: a bigger cutting area and overlarge cuttings volume, and more hole bottom sediments, difficult cuttings discharging, and serverely repeat cuttings breaking, and using more concret grouting amount, and lower drilling speed, faster bit wearing, and longer working period, bigger material and labor ex haust, and higher engineering cost, unreasonable ratio of loading capacity to volume of pile foundation, and lower comprehensive economic benefits, and so forth.
然而,钻孔灌注桩施工中,目前最为普遍采用的是圆形断面桩基,一般采用大口径圆形基桩工程钻头,由于国内生产的泥浆泵、钻具及钻进方法等因素的限制,从而使钻孔破岩面积和体积过大,造成孔底沉渣过多,排渣困难且排浆量大,重复破碎问题突出,混凝土灌注量大,直接反映为钻进效率低、钻头磨损快、施工工期长、材料能耗和劳动消耗大、工程成本较高、桩基荷载能力与体积比不合理、综合经济效益不理想等,这些问题严重影响和制约着钻孔灌注桩施工技术的发展和进步。
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Large condensate gas pools are developed in the Ordovician and Carboniferous in the Lunnan low salient. Geochemical study shows that the Ro of gas condensate in these gas pools is in the range of 0.8% 1.0%(far below the threshold of R o=1.3% for thermal cracking), and the condensate gas is overmature dry gas (with R o>2.0%). Moreover, the crude oil and dry gas in the study area were charged in different stages, indicating that the genesis of the condensate gas was not thermal cracking.
轮南低凸起奥陶系及石炭系发育大规模的凝析气藏,地球化学的研究结果表明,这些凝析气藏中凝析油 Rc 在0.8%~1.0%(远低于热裂解成因 R o=1.3%的门限),凝析气为过成熟干气(回归 R o>2.0%);同时,区内原油与干气的充注期相异,表明轮南地区的凝析气藏并非热裂解成因的产物。
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This article is on the basis of the predecessors working results. After a thorough and meticulous field geological survey ,it collects a large number of geology information and researches from the regional metallogenic geological background, and focuses on the formation, structure, palaeogeographic environment and mineralization. It describes the nature of the deposit, evolution and the formation of the ancient environment,analysis of the source material,sedimentary environment, advises the genesis point of view and establishes the deposit model,studies the control factors and bauxite ore mineralization, sums up the mineralization law and suggests the favorable prospect of this area.
本文在学习、研究前人各种工作成果的基础上,经过深入细致的野外地质调查,收集大量的地质信息,从区域成矿地质背景研究入手,着重研究了地层、构造、古地理环境与成矿的关系;阐述了西村矿床的性质、演化及其形成时的古环境;分析了成矿物质来源及沉积环境;提出了矿床成因的观点;建立了该矿床成矿模式;研究了控矿因素与铝土成矿关系,总结了矿化富集规律;提出了该区有利的找矿远景。
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SECURITY BUILDING, LARGE POOL, ENTERTAINING AREA AND PARKLIKE GROUNDS.
安全大楼,大游泳池,娱乐区和像公园般的草地。
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A large number of the positive Fas-cells, in spleen, distributed in red pulp and the surrounding area of periarterial lymphatic sheath scatteredly or in clusters.
大量Fas表达阳性细胞分布于红髓和动脉周围淋巴鞘的周围;阳性细胞簇团状或散在分布。
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Perkin show the company is headquartered in Canton, in Panyu, Guangzhou, Shanghai Pudong, Beijing has three large-scale production base, the total area of more than 40,000 square meters, has 16 wholly-owned subsidiaries, 20 several offices.
秀珀公司总部位于广州,在广州番禺、上海浦东、北京拥有三个大型的生产基地,总面积超过4万平方米,下设16个全资分公司,20多个办事处。
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And many multi-objective evolution algorithms have emerged in large numbers, such as SPEA、PESA、NPGA and so on. Making use of evolution algorithm to solve multi-objective problems have gradually become a hot issue and the most important research area.
目前涌现出了很多种多目标进化算法,比如SPEA、PESA、NPGA等,利用进化算法求解多目标优化问题逐渐成为一个热点和重要研究领域。
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Due to its large surface area, mesoporous structure, pure anatase structure and high adsorption capacity, the photoactivity of 31%TiO〓/SiO〓 was much higher than that of the pure titanium dioxide.
多孔硅胶抑制了高温时TiO〓晶型由锐钛矿向金红石型的转变,并且对TiO〓具有很好的分散能力。
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The results showed that catalyst prepared at 160℃ and pH=1 has the best photocatalytic activity, which is related to its small size and large surface area.
结果表明,在160℃、pH=1条件下制备的催化剂的活性最佳,这与其具有小的粒径、大的比表面积等因素有关。
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Pillared clay is a kind of the mineral materials, which is synthesized by pillaring inorganic polycations or organic ionic groups into clay minerals. Modified clay is a two-dimensional mineral material with large surface area, high thermal stability, strong surface acidity and variable pore size, therefore it is widely used in such fields as catalyst, sewerage treatment, antibacterial material, photic functional material, ionic conductor, pharmacy, nano-complex preparation and nuclear scrap treatment.
柱撑粘土是矿物材料的一种,它是一种由聚合无机阳离子或有机离子插入粘土矿物中而形成的一种具有二维孔洞的矿物材料,具有比表面积大、热稳定性好、表面酸性强以及孔径可变等特性,因此在催化、污水处理、抗菌材料、光功能材料、离子导体、制药、纳米级复合材料制备、核废料处置等领域有着广阔的应用前景。
- 推荐网络例句
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Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.
在对危险的南部地区访问时,他斥责什叶派民兵领导人对中央集权的挑衅行为。
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In fact,I've got him on the satellite mobile right now.
实际上 我们已接通卫星可视电话了
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The enrich the peopling of Deng Xiaoping of century great person thought, it is the main component in system of theory of Deng Xiaoping economy, it is a when our country economy builds basic task important facet.
世纪伟人邓小平的富民思想,是邓小平经济理论体系中的重要组成部分,是我国经济建设根本任务的一个重要方面。