查询词典 quaternary

Furthermore, through the way of Quaternary Geology, Tectonic Geology and Geography, the coupling relation between eco-environment and geotectonics has been discussed based on the Theory of Dissipative Structure and the Hypothesis of Wavy Mosaic Structure.(1) Clear-cut of related ideas.

本文以陕西生态环境以及生态环境与构造的关系为研究对象，综合运用野外调查、遥感GIS手段、历史文献分析等，系统论述了陕西各种生态环境特征、危害及其成因；在此基础上，应用第四纪地质学、地质构造学、以及自然地理学的基本方法分析了陕西生态环境特征和问题形成的构造机制，运用耗散结构理论和波浪镶嵌构造学说从理论与实践的结合上，探讨了生态环境整体性与构造的耦合关系。

The birthplace of migrating birds had been a controversial problem for a long time. Based on comparision within winter habitat, reproduction habitat of Grus nigricollis, reproductive physiology and the upheaval of Qingzang Plateau in the Quaternary Period. We concluded that reproductive habitat was the birthplace of the bird species.

迁徙鸟类的种系发源地一直是个有争议的问题，本文依据黑颈鹤的越冬生境与繁殖生境的对比，以及青藏高原隆升与第四纪冰川的先后、动物繁殖生理等不同证据推断，繁殖地是鸟类迁徒的种系发源地。

Ma, the clay mineral assemblage among Quaternary loess-soils, Hipparion Red-Earth, and Miocene loess-soils shows similar components, mainly consisting of illite (55-80%), kaolinite (7-20%), chlorite (4-13%), smectite (2-23%) as results calculated by comparing major peak areas.

主要研究结果和认识如下： 1、定性和半定量分析结果表明，22.0MaBP以来，黄土高原地区风尘堆积中的粘土矿物组成基本上是一致的，主要以伊利石为主，其次为绿泥石、高岭石和蒙皂石以及少量的混层矿物。

The PEI grafted on the surface of nylon was modified by the alkyl halide such as bromohexane and iodomethane,to give high-molecular-weight antimicrobial quaternary ammonium salts.

尼龙6用4-溴丁酰氯活化，再与高分子聚乙烯亚胺在有机溶剂中进行反应，使PEI共价接枝在载体上，然后用卤代烷对接枝在尼龙6上的PEI进行烷基化反应，使其形成具有杀菌功能的高分子季铵盐，制备出尼龙树脂固定化的高分子抗菌杀生剂。

The nylon was activated with organic functional groups,and after that reacted with high-molecular-weight polyethyleniminein the organic soleent. PEI was grafted covalently on the surface of nylon. The PEI grafted on the surface of nylon was modified by the alkyl halide such as bromohexane and iodomethane,to give high-molecular-weight antimicrobial quaternary ammonium salts.

摘 要：尼龙6用4-溴丁酰氯活化，再与高分子聚乙烯亚胺在有机溶剂中进行反应，使PEI共价接枝在载体上，然后用卤代烷对接枝在尼龙6上的PEI进行烷基化反应，使其形成具有杀菌功能的高分子季铵盐，制备出尼龙树脂固定化的高分子抗菌杀生剂。

Additionally, the spontaneous decomposition from (220) surfaces to {112} facets is confirmed and irrelated to the substrates adopted. The effects of Ga content on lattice vibration modes are discussed in the quaternary 〓 films firstly.

系统地研究了不同硒化温度和退火时间以及Ga含量x等因素对薄膜性能的影响，证实了（220）自发分解现象，而且这种自发分解现象并不受衬底的影响。

Key words: natural polymer; multifunction water treatment reagent; isoquinoline quaternary ammonium salt; relative viscosity.

关键词］天然高分子；多功能水处理剂；异喹啉季铵盐；相对粘度

By weight loss measurements and electrochemical method, the inhibition and adsorption behavior of isoquinoline quaternary ammonium salt on A3 steel in 1mol/L HCl was studied.

采用失重、电化学法研究了异喹啉季铵盐在 1mol/L盐酸溶液中对A3钢的缓蚀行为及吸附规律。

Years 9 28, in the color of shares issued on the related party transactions bulletin, bulletin said:"According to a resource block in the first stage of geological work carried out by the result, the block now proven high-quality bauxite resources amounted to 160 million tons (Al2O3 an average grade of 37.91 percent, the average ratio of 12.18 Al-Si), according to China Nonferrous Metals Industry Association in January 2007 issued a "certificate of identification of scientific and technological achievements, Lao province of Champasak帕克松area is Quaternary basalt bauxite LATERITIC Sanshui bauxite weathering crust type, with abundant resources, the exploration and exploitation conditions are better, obviously the characteristics of the anticipated benefits.

二千零七年9 28在对关联方交易的公告已发行股份的颜色，公报说：&据美国地质工作的资源块的第一阶段所进行的结果指出，现在证明块高质量的铝土矿资源达160万吨（氧化铝的百分之37.91，在12.18铝硅平均比例平均成绩），2007年1月根据中国有色金属工业协会发布了科技成果鉴定&证书老挝的占巴塞省帕克松地区第四系玄武岩红土型三水铝土矿风化壳型铝土矿资源丰富，勘探和开采条件，更好，很明显的预期效益的特点。

The growth of C. japonica grow well in the Limy dolomite, then in quartz sandstone, sandstone and shale with coal, purple sandstone and metamorphic sandstones, but poor in the quaternary clay.

日本柳杉在灰质白云岩上生长最好，在石英砂岩、煤系砂页岩、紫色砂岩、变质砂岩上居中，而第四纪粘土生长较差。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。