网络释义英英释义
...:普通痣通常是棕黄色、棕色或黑色,而恶性黑色素瘤会在棕黄色或棕褐色基础上掺杂粉红色、白色、蓝黑色。其中,蓝色最为不祥,白色则提示肿瘤有自行性退变。结节型恶性黑色素瘤总是呈蓝黑色或灰色。 黑色素瘤和黑痣区别四:直径(diameter):普通痣直径一般小于5毫米,而恶性黑色素瘤直径大于5毫米。
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nominal diameter [机] 公称直径 ; 公称通径 ; [地质] 标称直径 ; 称直径
outside diameter [机] 外径 ; 外直径 ; 壁厚
pitch diameter [机] 节圆直径 ; [机] 节径 ; 中径 ; 分度圆直径
inside diameter [数] 内径 ; 内部直径 ; 内直径 ; 内径尺寸
angular diameter [数] 角直径 ; 角径
mean diameter 中径 ; [物] 平均粒径 ; 均匀直径
Screw Diameter 螺杆直径 ; 螺旋直径 ; 机组型号 ; 螺杆长径比
roller diameter [机] 滚子直径 ; 转鼓直径 ; 滚筒直径 ; 电压
Throat diameter 喉径 ; 喉部直径 ; 喉圆直径
diameter [ dai'æmitə ]
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n.
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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)
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the length of a straight line passing through the center of a circle and connecting two points on the circumference
以上来源于: WordNet
柯林斯英汉双解大词典
diameter /daɪˈæmɪtə/ CET4 TEM4
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1.
N-COUNT The diameter of a round object is the length of a straight line that can be drawn across it, passing through the middle of it. 直径 [also 'in' N]
例：...a tube less than a fifth of the diameter of a human hair.
…一根直径不到头发五分之一的微管。
双语例句原声例句权威例句
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The dome is 42.3 metres in diameter.
这个穹顶直径为42.3米。
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The axis of a circle is its diameter.
圆的对称中心线就是直径。
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It turns out that the diameter is actually 2.5 centimeters.
它的直径实际上是 2.5 厘米。
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And how that works is, as your number increases, the diameter gets smaller and smaller."
VOA: special.2009.05.18
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They might be 100 nanometers or so in diameter, whereas, a cell is ten microns or so in diameter.
直径只有一百纳米左右,而一个细胞的直径是十微米左右
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And, that's a good thing to know because if you come out with an answer that's somewhere near the diameter of the universe and it's supposed to be the diameter of an atom, then you will know that you probably made a mistake.
这是我们需要知道的,因为当你做一道题得到的答案,是宇宙的直径,而正确答案是原子直径时，你能很快发现你的错误。
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