diameter
直径
常用释义
英音[ daɪˈæmɪtə(r) ]
美音[ daɪˈæmɪtər ]
变形
复数:
diameters
基本释义
- n. 直径；放大倍数
考试频率
中考
考频：近四年出现3次
- n. 直径
例句
-
1·The dome is 42.3 metres in diameter.这个穹顶直径为42.3米。来源: 《牛津词典》
-
2·The axis of a circle is its diameter.圆的对称中心线就是直径。来源: 《牛津词典》
-
3·It turns out that the diameter is actually 2.5 centimeters.它的直径实际上是 2.5 厘米。
-
4·The microscope can magnify the object 100 times in diameter.这架显微镜能把物体的直径放大100倍。
-
5·On Mars, there are relatively few craters less than 5 kilometers in diameter.在火星上，直径小于5公里的陨石坑相对较少。
-
6·The crater, now deeply buried in sediment, was originally about 200 kilometers in diameter.这个陨石坑现在深埋在沉积物中，最初直径约200公里。
-
7·The negatively charged region is large: several hundred meters thick and several kilometers in diameter.带负电荷的区域非常大：数百米厚，直径达几千米。
-
8·Nanocrystals, also known as quantum dots, are semiconducting particles with a diameter of a few millionths of a millimeter.纳米晶体，也被称为量子点，是一种直径只有百万分之一毫米的半导体粒子。
-
9·It is mainly composed of a steel rectangular parallelepiped and two steel cylinders of the same diameter fixed at its two ends.它主要由一钢制长方体和固定在其两端的两个相同直径的钢制圆柱体组成。
-
10·Atlas, the flatter of the two, has a diameter of only 18 kilometers from pole to pole but is almost 40 kilometers across its waist.阿特拉斯是两者中较平整的一个，极点间的直径只有18公里，但它的赤道周长却有40公里。
网络释义
- particle diameter : 粒径；颗粒直径，粒子直径
- pipe diameter : 管直径
- inner diameter : 内径
- hole diameter : 孔直径；刃口直径
- pore diameter : 孔径；孔隙直径
- outside diameter : 外直径
同根词
词根：
diam
diametrical
adj
直径的；正好相反的；截然的
diametral
adj
直径的
diametric
adj
直径的；正相反的
diametrically
adv
完全地；作为直径地；直接地；正好相反地
diam
n
直径