英语解释德语解释

diameter

音标[dai'æmitә]

汉语翻译

n. 直径
【医】直经, 径

词型变化

形容词:diametral

英语解释

名词 diameter:

the length of a straight line passing through the center of a circle and connecting two points on the circumference
同义词：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)

例句

The axis of a circle is its diameter.
圆的轴线是其直径。
We must gauge the diameter of wire first.
我们必须先测量电线的直径。
The diameter of the tree-trunk is about 2 meters.
这树干的直径大约是2米。
This lens can magnify 20 diameter.
这个透镜能放大20倍。

详细解释

di.am.e.ter

n.（名词）
Abbr. dia.,diam.Mathematics
缩写 dia.,diam.【数学】
A straight line segment passing through the center of a figure, especially of a circle or sphere, and terminating at the periphery.
直径：穿过一图形，特别是圆形或球形的中心到圆周结束的直线段
The length of such a segment.
直径长：这样一段的长度
Thickness or width.
厚度或宽度

来源：
Middle English diametre
中古英语 diametre
from Old French
源自古法语
from Latin diametrus
源自拉丁语 diametrus
from Greek diametros
源自希腊语 diametros
dia- [dia-]
dia- [前缀，表.完全的，有始有终的.]
metron [measure] * see mô- 2
metron [测量] *参见 mô- 2

【引伸】
diam.etral

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