• 音标
  []　
• 词性及解释
  n. 直径
  【医】 直经, 径
• 例句
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• 相关词条
  critical diameter sweep diameter root diameter installation diameter conjugate diameter disk diameter diameter factor minor diameter column diameter equivalent diameter balance diameter excavated diameter Increased diameter hydrodynamic diameter internal diameter diameter clearance occipitofrontal diameter grip diameter spherical diameter fall diameter ideal diameter

n.[C]
1. 直径
Measure the diameter of this circle.
量一下这圆的直径。
2. 倍(透镜等的放大单位)
This glass magnifies 20 diameters.
这个放大镜能放大二十倍。