查询词典 quaternary

A bis-imdazoline corrosion inhibitor JUC was synthesized by reacting with divinyl three amine,and its quaternary ammonium JUCI was also synthesized for corrosion inhibition in acids.

以己二酸、二乙烯三胺为原料合成了双环咪唑啉缓蚀剂JUC，并对其季铵化后得到了适于酸化用的双环咪唑啉季铵盐缓蚀剂JUCI；采用静态挂片失重法对合成的缓蚀剂在酸化条件下的缓蚀性能及与非离子表面活性剂SA-1复配后的缓蚀性能进行了评价研究。

Yunnan plateau took shape through the ascent by the erogenic movement of the Tertiary and Quaternary period.

云南胡蜂垂直分布带的划分云南高原是经第三、四纪强烈造山运动抬升以后形成(常达，1958)。

Researchers used the features of glacial erosional and sedimentary landforms as well as the differences of the glacial tills in chemical and physical weathering to determine the ages of Quaternary glaciations .

1引言20世纪70年代及其以前，我国第四纪冰川的年代主要是采用相对年代法确定，即采用冰川侵蚀地貌和沉积地貌，冰碛物化学和物理风化程度差异来划分第四纪冰期[1~3]。

Results are as following:The causes of grassland desertification of Hulunbeir are the outcome of interaction of nature and the human beings. Among these reasons, the loose soil texture, which was formed in the fluviolacustrine sediment during Quaternary, establish the physical ground, and the drought and wind is the natural force of grassland desertification. And then over-cutting forest, over-grazing grassland, imbalance of resource utilization and estrepement reduce the coverage of vegetation, therefore provide necessary conditions for the grassland desertification.

其中，形成于第四纪河湖相沉积沙的疏松土壤母质，为日后土壤风蚀奠定了深厚的物质基础；干旱多风的气候条件构成了草地风蚀沙化的自然营运力；而人为过度砍伐沙地林木资源、沙质草地长期超载放牧、资源利用不平衡以及乱垦、滥挖等不合理经济行为，又降低了沙化草地植被覆盖度，为草地风蚀沙化提供了必要条件。

In this paper, we analyzed the larch extract tannin, aminom ethylation of larch extract tannin, quaternization of cationic larch extract tannin and amphoteric larch extract tannin (sulfonation of the larch extract tannin quaternary ammonium) by infrared spectral analysis, confirmed the quarternization and sulfonate groups, and measured its water treatment properties such as flocculation, scale inhibition, results showed that quaternization of larch extract tannin and amphoteric larch extract tannin have better water treatment ability, can realize the multifunction.

本论文采用红外光谱法对落叶松单宁、胺甲基化落叶松单宁、阳离子落叶松单宁季胺盐、两性落叶松单宁进行了化学结构分析，并对其水处理剂性能如絮凝、阻垢进行了检测。实验结果表明：落叶松单宁季胺盐和两性落叶松单宁均具有较佳的水处理能力，是性能良好的一剂多效工业水处理剂。

Resources: Eucommia as geological Quaternary glacial movement residue from the ancient tree species, endemic to China.

资源条件：杜仲作为地质上第四纪冰川运动残留下来的古生树种，为我国特有。

The tectonic activities are so strong that a large number of faults and folds are formed in the area. Under coupling of the endogenic and exogenic geological processes, there are many loose Quaternary deposits, and they are the main carrier of most geological hazards.

在青藏高原隆升及气候变化等内外动力作用下，研究区内堆积体分布广泛，具有独特的工程地质特征并成为该区内地质灾害的主要物源。

In generall surface water, Quaternary ground water and karst water are not hydraulically linked with each. Other in Laiwu iron ore field. However karst sinking at surface tokes place in places where neotectonic faults are developed.

莱芜铁矿田中，一般情况下地表水、第四系潜水与岩溶水无水力联系，地表无塌陷产生，只有在新构造断裂发育的地段，才有可能产生岩溶地面塌陷。

The geologic structure, stratum, geomorphy and the features of geologic settlement of quaternary period in Macao District were briefly introduced in the paper and the significance of studying and analyzsing the geological condition of coastal engineering for sea reclamation were pointed out in it.

文中简要地概述了澳门地区的地质构造、地层、地貌以及第四纪地质的沉积特点，提出了研究分析近岸工程地质条件对填海造陆工程的重要意义。

It includes the following aspects of the Gulf: regional geology, topography and geomorphy, types and distribution of superficial sediments, regularities of distribution and engineering geological characteristics of Quaternary sediments, bedrock and its structure and existing major engineering geo-environmental problems.

分别对胶州湾周边区域地质，地形地貌，表层沉积物类型与分布，第四系沉积物分布规律，第四系沉积物工程地质特征，基岩与构造和存在的主要工程地质环境问题等进行研究。

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。