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
- Four new types of organic siloxane surfactants with quaternary ammonium group have been obtained.
通过多步骤合成了四种含有季铵基的有机硅表面活性剂。 - 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。 - Research on the Quaternary fine-fraction lithofacies and sedimentation model in Tainan Area, Qaidam Basin
柴达木台南地区第四系细粒沉积岩相与沉积模式研究 - 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。 - 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。 - With the uplift and Quaternary climate change, the Yulong mountain engendered four plaeoglaciations and has grown modern glaciers.
在山体上升和第四纪气候变化的背景下，玉龙山产生了四次更新世冰川作用，并发育有现代冰。 - The study of the glacial interglacial paleoproductivity evolution during late Quaternary in the bay of Bengal
孟加拉湾晚第四纪冰期和间冰期古生产力演变研究 - 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。 - 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。 - Sprinkler section valve Those correspond to Quaternary, Pliocene, Upper Miocene, Lower Miocene and Eocene respectively.
喷水灭火系统分段阀分别为第四系、上新统、中新统上段、中新统下段及始新统。