主要动力

This dissertation was focused on the research about the formation and evolution of NQB from the Late Triassic to the early middle Epoch of Jurassic Period, including integrated analyzing the characteristic of the key stratigraphic surfaces, the time of the key stratigraphy, regional rock straigraphy, biostratigraphy and chronostratigraphy, sedimentary system and depositional facies. On basis of these analysis, a tectonic evolution model have been established for NQB during from the Late Triassic to the early middle Epoch of Jurassic Period.1. After the systematic surface analysis about main stratigraphy units, we found that:(1) the bottom of Xiaochaka formation was comformity with the middle Triassic in the basin, and in the north margin it was deposited and overlapped on the different period stratigraphy before Triassic.(2) The top surface of Xiaochaka formation developed regionally karst and paleo-karst breccia, and was uncomformity with Nadigangri Formation, these things suggest that NQB in Xiaochaka depositing stage was developed from middle Triassic basin, and then an extensive regression occurred, the deposition was over and erosion come into being.(3) The lithologic assemblage, geochemistry, mixed fossils, and stratigraphy overlapping characteristic of Quemocuo Formation in early middle Jurassic indicted that the uncomformity surface was an extension-unconformity.2. Integrated analysis about stratigraphy division and correlation indicted that:(1) the paleontologic assemblage of Xiaochaka formation show its time was Carian -Norian stage of late Triassic. According to it was overlapped by late Triassic Nadigangri Formation, so Xiaochaka formation should be Carian - early Norian stage.(2) the SHRIMP Zircon U-Pb age of Nadigangri formation volcanic rocks wear vary form 216 to 205 Ma, so its time should be Norian, but maybe extended into Rhaetian Stage.(3) The age of its bottom volcanic rocks, the fossil assemblages of its middle and upper members and overlapped by lower Jurassic, indicted the age of Riganpeicuo Formation was Norian - Rhaetian stage. And the same time, the volcanic rocks geochemistry of Nadigangri and Riganpeicuo formation both reflected that they wear formed in rift tectonic settings. The lower lithologic and surface characteristic, fossil assemblages and its upper maybe was conformity with lower Jurassic, all reflected that the age of Tumengela Formation in Tumen area should be Norian - Rhaetian stage.

论文对晚三叠世—中侏罗世早期盆地的形成与演化开展了研究，包括关键地层界面特征分析、关键地层时代归属分析、区域岩石地层、生物地层和年代地层的综合对比分析、区域沉积体系与沉积相分析、岩相古地理分析，最终建立晚三叠世—中侏罗世早期羌塘盆沉积—构造动力演化模式。1、系统的对各地层单元的界面分析发现：(1)肖茶卡组底界在盆地内部与中三叠统整合关系，在盆地北缘为沉积超覆于不同时代的前三叠系之上：(2)肖茶卡组顶界面发育古岩溶角砾岩，与上覆那底岗日组为岩溶不整合接触，说明肖茶卡组沉积时期的羌塘盆地是在早中三叠世的盆地基础发展起来的，后期出现了广泛的海退事件，使盆地结束沉积并遭受风化剥蚀作用；(3)中侏罗统雀莫错组的岩性组合特征、岩石化学特征、古生物化石混积和地层的沉积超覆现象均表现出裂陷环境下形成的伸展不整合面的特征。2、综合地层划分与对比分析认为：(1)肖茶卡组古生物化石组合反映其时代为晚三叠世卡尼期—若利期，根据其上被上三叠统那底岗日组不整合覆盖，将其时代厘定为卡尼期—若利期早期；(2)那底岗日组火山岩SHRIMP锆石U-Pb年龄在216～205 Ma之间，其时代主要为若利期，可能包含有瑞替期：(3)日干配错组底部火山岩的年龄、中上部化石组合及其被下侏罗统整合覆盖，综合反映的时代为晚三叠世若利期—瑞替期，而且那底岗日组火山岩和日干配错组火山岩的地球化学成分分析反映两者均为引张构造背景下的产物；土门地区的土门各拉组的下部岩性及界面特征、化石组合和上部可能被下侏罗统整合覆盖，综合反映其时代为若利期—若利期。

The results show that adsorption of cationic polymers in porous media is affected mainly by electrostatic attraction and hydrodynamic forces.

结果表明，阳离子聚合物在多孔介质中的吸附主要受静电引力和水动力的影响。

In this paper , experiments on acid solution under still hydraulic condition and relation of pH value with time as well as analysis of equilibrium of corroding system are stated.

本文主要给出非流动的水动力条件下酸性水侵蚀试验的浸液pH值与时间的关系，以及体系侵蚀反应的平衡分析。

The main concern of this dissertation is the relations between republicanism and modern political society. It demonstrates that republican commitment is the legitimacy of modern politics, which means that all members of a civic community share the political sovereignty and civic community should put more emphasize collective self-rule, but both dynamics of modern society and cotemporary dominating political social and moral language of liberalism go against the republicanism's commitment, so this dissertation explores that the civic community should renew the common good, regenerate the deliberative public sphere and foster civic virtue so as to remedy the maladies of modern society.

本文的核心问题是共和主义与现代政治的相关性，主要论点是现代政治的正当性基础在于共和政治的公民共同体全体成员共同享有政治主权，也即公民共同体集体自治原则，但是现代政治一方面是建立在对共和政治的规范性承诺基础之上，另一方面现代社会的内在动力以及现代社会的主流政治社会道德话语对于共和政治的实现和维持或者存在威胁，或者隐含缺陷，要维持和实现共和政治的规范性承诺，需要恢复公共善的优先性、重建协商的公共领域以及塑造公民德性。

Crank bearing is the key component of crank connecting rod mechanism of emulsion pump and the damageable part during power transmission.

曲柄轴承作为乳化液泵曲柄连杆机构的关键部件，也是动力传递过程中极易损坏的薄弱环节，曲柄轴承的磨损失效是高压大流量乳化液泵的主要失效形式。

Ogrammable logic controller meets the specifications to guarantee the safe operation of equipments.Crank bearing is the key component of crank connecting rod mechanism of emulsion pump and the damageable part during power transmission.

曲柄轴承作为乳化液泵曲柄连杆机构的关键部件，也是动力传递过程中极易损坏的薄弱环节，曲柄轴承的磨损失效是高压大流量乳化液泵的主要失效形式。

How the conformity resources, does the solution modern city allocation development question, enable the allocation industry to become well promotes the urban development the drainless power, is the urban allocation industry research main topic.

如何更好地整合资源，解决现代城市配送发展问题，使得配送业成为推进城市发展的不竭动力，是城市配送业研究的主要话题。

How the conformity resources, does the solution modern city allocation development question, enable the allocation industry to become well promotes the urban development the drainless power, is the urban allocation industry research main topic.

如何更好地整合资源，解决城市配送发展问题，使得配送业成为推动城市发展的不竭动力，是城市配送业研究的主要话题。

How the conformity resources, does the solution modern city allocation development question, enable the allocation industry to become well promotes the urban development the drainless power, is the urban allocation industry research main topic.

如何更好地整合资源，解决现代城市配送发展问题，使得配送业成为推动城市发展的不竭动力，是城市配送业研究的主要话题。

How the conformity resources, does the solution modern city allocation development question, enable the allocation industry to become well promotes the urban development the drainless power, is the urban allocation industry research main topic.

如何更好地整合资源，解决现代城市配送发展问题，使得配送业成为推动城市发展的不竭动力，是城市配送业研究的主要话题。51-51免费论文网-网-欢迎您

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。