diameter

英 [daɪˈæmɪtə(r)]

美 [daɪˈæmɪtər]

n.  直径; 对径; 放大率; 放大倍数

复数：diameters　

CET4CET6考研TOEFLIELTSGRETEM4TEM8医学

Collins.2 / BNC.4613 / COCA.5253

牛津词典

noun

• 直径；对径
  a straight line going from one side of a circle or any other round object to the other side, passing through the centre
  1. the diameter of a tree trunk
     树干的直径
  2. The dome is 42.3 metres in diameter .
     这个穹顶直径为42.3米。
• 放大率；放大倍数
  a measurement of the power of an instrument to magnify sth
  1. a lens magnifying 300 diameters (= making sth look 300 times larger than it really is)
     放大 300 倍的透镜

柯林斯词典

• N-COUNT 直径;对径
  Thediameterof a round object is the length of a straight line that can be drawn across it, passing through the middle of it.
  1. ...a tube less than a fifth of the diameter of a human hair.
     直径不足人的头发直径1/5的电子管
  2. ...a length of 22-mm diameter steel pipe.
     一段直径为 22 毫米的钢管
  3. ...a tiny capsule, between 1 and 3 millimetres in diameter.
     直径在 1到3 毫米之间的微型胶囊

英英释义

noun

• the length of a straight line passing through the center of a circle and connecting two points on the circumference
  Synonym:diam
• a straight line connecting the center of a circle with two points on its perimeter (or the center of a sphere with two points on its surface)

双语例句

• Effect of temperature and stirring rate on the diameter and the monodispersity of silica spheres
  温度和搅拌速度对二氧化硅直径和单分散性的影响
• The axis of a circle is its diameter.
  圆的对称中心线就是直径。
• Design, construction technology and construction control of construction of tube-in-tube with large diameter are introduced.
  介绍了大直径筒中筒滑模施工的滑模设计、施工工艺和施工控制要点。
• Finally, the effect of the diameter on the cohesion and internal friction angle of coal samples is investigated.
  最后讨论了直径对煤样黏聚力和内摩擦角的影响。
• The diameter and the circumference of a circle.
  圆的直径和圆周相关联。
• The average grain diameter and cumulative relative curve of red sandstone are obtained by the grain size analysis.
  对红砂岩进行粒度分析，得出其平均粒径和概率累计曲线。
• And the volume of the satellite droplets increases with the initial droplet diameter and the impact velocity.
  且卫星液滴的体积随着初始液滴直径和初始撞击速度的增大而增大；
• The plant height, stem diameter, length and width of maximum leaf increased.
  外观上表现为株高、茎粗、最大叶长和最大叶宽等都有一定程度的增加。
• We are to measure ( must measure) the diameter of this small axle by means of a micrometer.
  我们必须用千分尺来测量这根小轴的直径。
• The diameter of a circle must go through the center.
  圆的直径必相交于圆心。