大地构造的

The author reviews the science and technology history home and abroad,and introduces the neoteric revolution in this field,focusing on the four scientific discoveries-the Big Bang,the quark model in material structure,the plate structure,and the DNA double helix structure-and the five technological invention-nuclear technology,space technology,information technology,biotechnology and nanometer technology-in the 20th century and their academic base of theory of relativity and quantum mechanics;and the writer...

回顾了中国和世界科学技术发展的基本历程；介绍了近代的科学革命和技术革命；重点论述了20世纪科学发现和技术发明的理论基础是相对论和量子力学，以及20世纪的四大科学发现——宇宙大爆炸理论、物质结构夸克模型、大地构造板块学说和DNA双螺旋结构和五大技术发明——核技术、空天技术、信息技术、生物技术和纳米技术；展望了21世纪科技发展前途；提供了油气开发与利用的信息。

The viscosity of the medium will cause dissipation of seismic energy, thus decreasing the amplitude and modifying the frequency content of the propagating wavelet. In order to obtain accurate information and imaging with high distinguishability from seismic data, the propagating rule of wave in viscoelastic medium should be studied.

地震波在大地介质的传播过程中，不仅波的振幅会衰减，而且有频散现象，因此要从地震数据中得到复杂构造的准确信息和高分辨率的图像，就必须研究粘弹性介质中波的传播规律。

It mainly consists of SN trend Guan Yan geosyncline type rift moving for long time and EW trend Da-Hong-Shan original continental crust rift moving in the early proterozoic and Yuan Bian-E-Bian original continental crust rift moving in the Mid-Late Proterozoic.

首次提出元古宙该区的古大地构造性质为诞生于太古宙雏陆壳内及其斜坡的雏陆壳型三岔裂谷系，主要由元古宙长期活动的南北向昆阳地槽型裂谷和早元古宙活动的东西向大红山雏陆壳间裂谷与中晚元古宙活动的盐边—峨边雏陆壳间裂谷组成，并论证了它们的演化—运动史。

And whether is it necessary to redefine the geotectonic pattern in southern China? In 1993, the authors discovered firstly the late Paleozoic radiolarian silicalite in the "Shuangqiaoshan Group", which, as we know, is a block within the ophiolitic mélange. In 1996, the authors discovered again the late Paleozoic fossils in the other rocks of "Shuangqiaoshan Group" and "Zhitang Formation" of Lower Sinian Series in the ophiolitic mélange. At the same time, the authors discovered firstly the early Paleozoic chitinozoa fossils.

因此，再次将"板溪群"是否是前震旦纪的一个变质地层单位、江南古陆是否存在以及华南大地构造格局是否需要重新厘定等问题提了出来。1993年笔者于赣东北蛇绿混杂岩带内的"双桥山群"岩块中，首次发现了含晚古生代的放射虫硅质岩。1996年又在该混杂岩带多处的"双桥山群"岩块和"下震旦统志棠组"中找到了含晚古生代的放射虫硅质岩，还首次在"登山群拔竹坑组"中发现了早古生代的几丁虫化石。

The occurrence of deep sources in basin usually results from the extension setting. The appearance of deep source in the black shales is corresponding to the period of crack of Rodinia Supercontinent. These conclusions provide some valuable geochemical data for us to understand the evolution and the tectonic setting of the Tarim Basin.

沉积盆地中这种深部物源的存在与盆地的伸展背景有关，研究区黑色页岩中深部物源的出现与Rodinia超级大陆的裂解期相吻合，为正确理解塔里木盆地的演化及其大地构造背景提供了良好的地球化学依据。

The Earth crust activity of different geotectonic elements could he estimated with the fracture fractal dimension.

利用断裂尺度分布的分形维数值的大小，可以定性判断不同大地构造单元的地壳稳定性。

The authors analyzed background of geotectonics for basalt containing Pt and Pd in the studied area. On the basis of the type of mineral deposit containing PGE, the authors also studied occurrence of Pt and Pd.

在分析黔西玄武岩中Pt、Pd岩石载体所处的大地构造背景、含铂矿床的可能类型和岩石化学特征与Pt、Pd可能存在状态的关系的基础上，研究了黔西玄武岩中R、Pd存在状态。

And whether is it necessary to redefine the geotectonic pattern in southern China? In 1993, the authors discovered firstly the late Paleozoic radiolarian silicalite in the "Shuangqiaoshan Group", which, as we know, is a block within the ophiolitic mélange. In 1996, the authors discovered again the late Paleozoic fossils in the other rocks of "Shuangqiaoshan Group" and "Zhitang Formation" of Lower Sinian Series in the ophiolitic mélange. At the same time, the authors discovered firstly the early Paleozoic chitinozoa fossils.

因此，再次将&板溪群&是否是前震旦纪的一个变质地层单位、江南古陆是否存在以及华南大地构造格局是否需要重新厘定等问题提了出来。1993年笔者于赣东北蛇绿混杂岩带内的&双桥山群&岩块中，首次发现了含晚古生代的放射虫硅质岩。1996年又在该混杂岩带多处的&双桥山群&岩块和&下震旦统志棠组&中找到了含晚古生代的放射虫硅质岩，还首次在&登山群拔竹坑组&中发现了早古生代的几丁虫化石。

The temporal and spatial distribution of stratabound deposits are hence closely related to specific tectonic units, ore-bearing formations and magmatic phases.

因而，层控矿床的时空分布特征与特定的大地构造单元、含矿建造和岩浆活动的时间和空间演化规律有关。

In view of previous work, it is considered that the tectonic back ground in the Neo-Proterozoic of the northern Anhui Province is a young back-arc basin, which was formed during the Grenville orogen in response to the convergence of the Rodinia super continent, rather than the positive continental margin during the breakup of the Rodinia super continent that was presented by previous study.

结合前人研究成果认为，皖北新元古代所处的大地构造背景可能是与Rodinia超大陆聚合有关的Grenville造山期形成的处于拉张的弧后盆地，而不是前人所认为的对应于Rodinia超大陆裂解期的被动大陆边缘。

The concept of equivalent rotationally rigidity is offered and the formula of rotationally rigidity is obtained.

主要做了如下几个方面的工作：对伸臂位于顶部的单层框架—筒体模型进行分析，提出了等效转动约束的概念和转动约束刚度的表达式。

Male cats normally do not need aftercare with the exception of the night after the anesthetic.

男猫通常不需要善后除了晚上的麻醉。