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
- 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。 - 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。 - The quaternary period of geologic time extends from the end of the tertiary period to the present.
地质时期中的第四纪是从第三纪一直到现在。 - 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。 - 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。 - 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 - 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 - 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 orebody occurred below Quaternary, mineralization is closely related to tectonic activity and alteration.
矿体赋存于第四系之下，矿化与构造活动及蚀变密切相关。 - 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。