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 diameter of a circle must go through the center.
  圆的直径必相交于圆心。
• 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。
• Where: Pitch and Diameter are in inches.
  其中：沥青和直径是英寸。
• Thus the gas flow rate, nozzle inner and outer diameter are important influential factors on bubble size.
  气体流量和管口内外径都是影响气泡尺寸的重要因素；
• The diameter and the circumference of a circle.
  圆的直径和圆周相关联。
• He measured the diameter of the artery.
  他测量了动脉的直径。
• The bolt hole pattern and outside diameter dimensions were adopted for plastic flanges manufactured in the U.
  用于美国制造的塑料法兰上所采用的螺栓孔模式和外径尺寸。
• This last error depends on the wire spacing and diameter.
  后者引起的误差取决于导线的距离和直径。
• 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。