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

• The serial catalyst is characterized by large pore volume and pore diameter, high activity and stability.
  该系列催化剂的主要特点是大孔容、孔径、性和稳定性高。
• 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。
• 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。
• This hole was a scant. 23 inches in diameter
  这个洞眼的直径只有0.23英寸。
• He measured the diameter of the artery.
  他测量了动脉的直径。
• The result gave the optimal filter particle diameter, layer thickness and filtration velocity.
  根据实验结果，确定了最佳的过滤介质粒径、过滤层厚度和过滤速度。
• The circle has a diameter of6 inches.
  这个圆直径六英寸。
• Where: Pitch and Diameter are in inches.
  其中：沥青和直径是英寸。
• An experiment investigation on flow resistance of inertial separation of small diameter water drops;
  分析了水滴的惯性分离机理以及各个因素对分离效率和流动阻力的影响。
• The relationships among perforation diameter, density, phase and casing strength are clarified.
  明确了射孔直径、度及相位等与套管强度的关系。