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 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。 - These supply a new information for the evolution of the Qinghai-Tibet Plateau lakes, climate change research and the division and correlation of the Quaternary strata.
为青藏高原湖泊演化、气候环境变迁研究及第四纪地层的划分与对比提供了新资料。 - 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。 - 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。 - 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 - 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。 - 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。 - Based on the binary mono-stable flip-flops, this paper proposes the design of quaternary mono-stable flip-flops.
在二值单稳态触发器设计的基础上，提出了四值单稳态触发器的设计方案。 - 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