diameter
美 [daɪ'æmətər]
英 [daɪ'æmɪtə(r)]
- n.直径；对径；放大率；放大倍数
- 网络外径；最大直径；完成外径
复数：diameters
diameter
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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 |
the diameter of a tree trunk 树干的直径 | |
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 |
a lens magnifying 300 diameters(= making sth look 300 times larger than it really is) 放大 300 倍的透镜 |