dia
me
ter
复数形式
diameters
1
直径, 直径
a straight line from one side of a round object, particularly a circle, passing through the center and joining the other side
- The diameter of a circle is the longest distance between any two points on its circumference, passing through the center.
圆的直径是通过圆心并且圆周上任意两点间的最长距离。
- To calculate the circumference of a circle, you need to know its diameter and use the formula π × diameter.
要计算圆的周长，你需要知道它的直径并使用公式 π × 直径。
- The engineer measured the diameter of the pipe to ensure it would fit snugly within the existing framework.
工程师测量了管道的直径以确保它能紧密地安装在现有框架内。
- In astronomy, the diameter of celestial bodies such as planets and stars provides crucial information about their size.
在天文学中，行星和恒星等天体的直径提供了关于它们大小的关键信息。
- The technician used a caliper to determine the diameter of the bearings needed for the machinery repair.
技术员使用卡尺来确定机械维修所需的轴承的直径。
同义词：
2
a unit of linear measurement used to express magnifying power
- The microscope had a diameter of 100×.
- Telescopes are often rated in diameters.
- Optical instruments list the diameter for comparison.
- The magnifier had a diameter suitable for reading fine print.
- Engineers specified the lens diameter for the experiment.