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

计算机

BNC.29261 / COCA.40079

英英释义

noun

• the cardinal number that is the sum of three and one
  Synonym:four4IVtetradquaternquaternionquaternityquartetquadrupletfoursomeLittle Joe

adj

• coming next after the third and just before the fifth in position or time or degree or magnitude
  1. the quaternary period of geologic time extends from the end of the tertiary period to the present
  Synonym:fourth4th
• consisting of or especially arranged in sets of four
  1. quaternate leaves
  2. a quaternary compound
  Synonym:quaternate

双语例句

• 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 equilibrium phase diagram and the density-composition diagram of the quaternary system were plotted using experimental data.
  依据实验测定的平衡溶解度数据及对应的平衡固相，绘制了该四元体系的平衡相图及其密度-组成图。
• Results indicated that organic bentonite could be prepared firstly by Na-modification and then by quaternary ammonium treatment.
  研究表明，采用天然钙基膨润土通过钠化提纯、季铵盐有机改性的方法，可以制备出性能优良的有机膨润土。
• At the same time, the standard Quaternary stratigraphic system of the North China Plain had been established on the basis of previous study.
  与此同时，结合前人的研究成果，建立了华北平原第四纪地层的标准模式地层层系。
• 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
• Quaternary Geosciences and Human Survival
  第四纪地球科学和人类生存
• Several polyoxyethylene type quaternary ammonium salt cationic surfactants were selected to investigate their interaction with acid dyes and influence on the dyeing properties.
  摘要选择了几种聚氧乙烯型季铵盐阳离子表面活性剂，探讨了这些表面活性剂与酸性染料的相互作用以及对染料染色性能的影响。
• Based on the analysis of the late Cenozoic stratigraphy, neotectonic topography and the structures of Quaternary in the region, the present paper studies the neotectonic characteristics of the region systematically.
  通过对晚新生代地层、构造地貌及第四系内褶皱和断层的综合分析，阐述了区内新构造活动特征。
• 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。
• The silt in the Yellow River Delta mainly belongs to the quaternary deposits.
  黄河三角洲粉土主要为第四纪散河流堆积物。