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
- 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。 - 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。 - Active Characteristics Study of Major Faults in the Subei Region in the Late Quaternary
肃北地区主要断裂晚第四纪活动特征研究 - 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。 - 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。 - Quaternary Geosciences and Human Survival
第四纪地球科学和人类生存 - An antistatic agent of polyacrylamide quaternary ammonium compound was designed and synthesized.
设计合成了聚丙烯酰胺季铵盐类的抗静电剂。 - 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； - In this paper experiments of image segmentation on Quaternary strata are made on RS image by morphologic methods.
利用数学形态学的方法对遥感影像的第四系地层进行了影像分割实验。 - 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。