quaternary
英 [kwəˈtɜːnəri]
美 [ˈkwɑtərˌnɛri]
adj. 季; 第四纪的; 四进制的；四元的；四价的
n. 四; 四个一组
BNC.29261 / COCA.40079
英英释义
noun
- the cardinal number that is the sum of three and one
adj
- coming next after the third and just before the fifth in position or time or degree or magnitude
- the quaternary period of geologic time extends from the end of the tertiary period to the present
- consisting of or especially arranged in sets of four
- quaternate leaves
- a quaternary compound
双语例句
- Quaternary sector of the economy: Involves the research and development needed to produce products from natural resources.
第四纪的经济部门：涉及的研究和发展生产所需的自然资源。 - Study on Synthesis and Properties of Multi Quaternary Ammonium Surfactant
多季铵盐表面活性剂合成与性能研究 - Research Progress in Preparation of Chitosan Quaternary Salts and Their Application
壳聚糖季铵盐的制备与应用研究进展 - Quaternary Geosciences and Human Survival
第四纪地球科学和人类生存 - Progress and problems of Quaternary glaciation and loess study in the midwestern United States
美国中西部第四纪冰川与黄土研究的进展和问题 - Geochemical characteristics of the Miocene eolian deposits and comparison with the Pliocene and quaternary eolian deposits
中新世风尘堆积的地球化学特征及其与上新世和第四纪风尘堆积的比较 - The results show that the quaternary ammonium cationic group of the modified products can better treat perchlorate in water.
结果表明，改性产物表面的季铵阳离子基团能较好地吸附废水中的高氯酸根； - The classification, naming and field description are introduced of the Tertiary and Quaternary rocks from monitoring shaft hole.
介绍了井简检查孔第三、四系岩土的分类、定名和野外描述。 - The Lower Liaohe River Plain, in Panjin city Liaoning province, has plenty of Quaternary brine resources, with the huge exploitation potential.
辽宁省盘锦市辖区内的下辽河平原储藏了丰富的第四纪卤水资源，开采潜力巨大，有必要对其进行特征分析和资源评价。 - This discovery provides important data and evidence for establishing the climatic stratigraphic sequence and division and correlation of the Quaternary glacial period on the Qinghai-Tibet plateau.
为青藏高原建立气候地层层序、第四纪冰期划分对比提供了重要的实际资料和依据。