diameter

noun

1. 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。
2. 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

1. N-COUNT 直径;对径
   The diameter of 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

1. This hole was a scant. 23 inches in diameter
   这个洞眼的直径只有0.23英寸。
2. The axis of a circle is its diameter.
   圆的对称中心线就是直径。
3. The circle has a diameter of6 inches.
   这个圆直径六英寸。
4. Geodetic theodolites generally have circles of about140mm diameter.
   大地经纬仪的度盘直径一般为140毫米。
5. The diameter of a circle must go through the center.
   圆的直径必相交于圆心。
6. Where: Pitch and Diameter are in inches.
   其中：沥青和直径是英寸。
7. 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。
8. Required cure time depends on temperature, pipe diameter, and pressure application.
   所需要的固化时间与温度、管道直径和应用压力有关。
9. 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。
10. The diameter and the circumference of a circle.
    圆的直径和圆周相关联。
11. The effect of liquid jet diameter on performance of two-fluid airblast atomizer was investigated in a water-air system.
    采用水-空气系统，研究了液体射流直径对双通道气流式喷嘴雾化性能的影响。
12. 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。
13. Teacher: What's the relationship between the radius and the diameter of the same circle?
    师：直径的长度和半径有什么关系？
14. 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。
15. You can choose Pipe diameter and Form as below.
    您可以选择探头直径和外型如下图所示。
16. 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。
17. 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
18. 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。
19. 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。
20. 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。
21. 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；
22. The mass ablative rate of the composite increases when the laser intensity and spot diameter are increased.
    而该复合材料的质量烧蚀率随入射激光强度和光斑直径的增大而增大。
23. 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。
24. 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；
25. 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。
26. The minimum and maximum girdle diameters are determined by taking a number of diameter measurements.
    最低纲领与最高束腰直径决意采取了若干直径测量。
27. He measured the diameter of the artery.
    他测量了动脉的直径。
28. Remember, we are THE source for Large Diameter Pipe, Heavy Walls and X-Grades.
    请记住，我们的大口径钢管，重墙和X级的源。
29. 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。

noun

1. the length of a straight line passing through the center of a circle and connecting two points on the circumference

   Synonym:    diam

2. 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)