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|  | | 为了更好的帮助您理解掌握查询词或其译词在地道英语中的实际用法,我们为您准备了出自英文原文的大量英语例句,供您参考。 | |
The Pearl River Mouth basin is one of the most important offshore basins in China.
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The South Tianshan Basin and East Tarim Basin were siliceous rock-limestone-mudstone basins.
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Physical and chemical environments of abnormal vitrinite reflectance evolution in the sedimentary basins
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Based on the tested data of pressure and vitrinite reflectance of some wells in sedimentary basins, abnormal high pressure is regarded as not the only factor to retard the increase of vitrinite reflectance (Ro).
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Apart from the types of the organic matter, the physical environment (temperature and pressure) and chemical environment (fluid composition and inorganic elements) will result in the abnormal vitrinite reflectance values in the sedimentary basins.
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| | Since the beginning of the last half century, the science of hydrology through successive steps of development has advanced to the realm of quantitative analysis. Engineers employed empirical methods to compute river discharges from precipitation data in answer to the ever-increasing demands made upon hydrologic analyses for engineering works. Yet for the phenomena of conflux of flows from precipitations, there exist only meager and fragmental quantitative analyses, without, so far, a systematic study of th... | | 半世紀來,水文学在發展的过程中已進入了定量分析的途徑;工程師們曾用各种經驗性的方法依據降水的资料推演河槽裹水流的現象,以应各种工程建設对於水文分析的要求。但是对於降水集流的过程始終祇有一些零星、片面的数值分析,没有一套完整的理論系統,因此阻碍着水文学在理論与应用方面的發展。作者曾用流体力学的分析法初步建立了降水集流的理論系統,把降水集流的过程分為三個階段:雨降地面逕流的產生、地面流、槽流之滙集,分别予以分析。本文便是其中第一階段,亦即最基本水文現象的分析。这些建立了的理論可以用為指導各种水文分析的南針,用為評論各种水文計算法的依據,並可用以創造一种近似而合理的方法,从降水資料推算逕流資料。本文中作者貢献一套理論,以分析地面點上降雨產生逕流的过程,揭發了基本水文現象的本質,最後並列舉实例的計算。早年郝登(R.E.Horton)曾依據郝納(W.W.Homer)的地面流实驗資料建立了一套在小地域內降水和逕流關係之理論,其後学者們根據他的理論和方法,用人工降雨法或流域資料实測法來確定降水和逕流間的關係。郝登的分析並没有从準確的動力学观點出發。在实際分析中發生了欠缺理論基礎的根本問題。这方面作者持着不同的意見。本文中根... | | 文摘来源 | | The tectonic movements of the compound platform in Eastern China have deep effects upon the coal formations.Due to tectonic control, the distribution of coal basins in the Mesozoic Era, the limitation of rock facies in the coal formations and the magmatic activity effecting the quality of coal, all appear to follow certain laws of regularity.Types of formations in this era, present more varieties than those of the Paleozoic, in general, faulted depressions are most common. The whole history of coalifi... | | 中国东部地台的构造运动对含煤建造具有深刻的影响. 由于构造的控造,中生代聚煤盆地的分布,含煤建造的岩相控制、岩浆活动对煤质的影响均有显著的规律性.建造类型较古生代多样化,一般以断裂凹陷型为最普遍.整个聚煤历史表明由于地壳运动不均一、沉降幅度不同等因素影响了沉积环境,从而使聚煤作用发生空间方面迁移的现象,而气候影响则为次要的因素. 中生代广泛的折皱和块断运动不断加深了大陆地形的变化,地貌景观益加复杂,不同的古地理环境形成不同的含煤建造,因而聚煤古地理类型繁多.中生代含煤岩系既具有海陆交替相沉积也有各式各样的陆相沉积,每一类型的岩性、岩相及含煤性均有各自的特点. | | 文摘来源 | | A knowledge of petroleum evolution is of critical significance in oil prospecting.First of all, the upper and lower limits of petroleum evolution are of prime importance in the evaluation of an oil-gas bearing area, because the nature and scale of oil-gas are controlled by the type and maturity of kerogen in sedimentary rocks For example, Tertiary oil-bearing basin's in eastern China (including the offshore continental shelf) is in the stage of oil-gas formation and an upper limit of petroleum evolution can... | | 我们在前文中已经讨论了石油演化的机理和阶段,提出了一个初步的石油演化模式。本文则讨论石油演化在石油地质中的应用,包括适用于一定地区的石油演化上、下限标准以及它们在油气远景评价、油气藏成因分析和石油地球化学方面应用等问题。 | | 文摘来源 | |   | | << 更多相关文摘 |
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