quaternary

英[kwə'tɜːnərɪ] 美[kwə'tɜːnərɪ]
  • adj. 第四纪的;四的;四进制的
  • n. 四;四进制;第四纪
quaternaries
  • qua prep.作为;以之...身份或资格
  • quaalude n.[药]安眠酮[商标名]
  • quack n.(鸭子)嘎嘎叫声;庸医;冒充内行的人v.嘎嘎地叫;大声闲谈;冒充内行adj.骗人的
  • quack doctor 蒙古大夫
  • quack-quack n.嘎嘎;鸭子(小儿语)
Noun:
  1. last 2 million years

  2. the cardinal number that is the sum of three and one

Adjective:
  1. consisting of or especially arranged in sets of four;

    "quaternate leaves"
    "a quaternary compound"

  2. 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"

1. Cationics are usually quaternary ammomium salts.
阳离子表面活性剂通常为季铵盐类.

来自辞典例句

2. The Quaternary sediments are largely undeformed.
第四纪的沉积物大部分未变形.

来自辞典例句

3. Moreover , there is a chiral quaternary carbon in the 1 - hydroxyethylidenediphosphonic ( hedp ) ligand.
证实1-羟基乙叉 -1,1-二膦酸配体 ( hedp ) 中的季碳为手性碳原子.

来自互联网

4. China's Datong group of volcanic Quaternary volcanic one of the group.
大同火山群是我国第四纪火山群之一.

来自互联网

5. Iron - nickel - phosphorus - boron quaternary alloy electroless plating on copper panel was described.
在铜基上化学镀铁 - 镍 - 磷 - 硼四元合金.

来自互联网

    用作形容词 (adj.)
    1. The Quaternary sediments are largely undeformed.
      第四纪的沉积物大部分未变形。
    2. Industries based on brainwork or knowledge are called the quaternary industry.
      以脑力劳动或知识为基础的产业被称为第四产业。