The iPod nano is half the thickness, it's 62% smaller by volume.
iPod nano的厚度只有它的一半，体积小了62%。
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| 词汇 | Half thickness |
| 分类 | 英语词汇 英语翻译词典 |
| 释义 |
Half thickness
原声例句
历届苹果发布会 The iPod nano is half the thickness, it's 62% smaller by volume. iPod nano的厚度只有它的一半，体积小了62%。 历届苹果发布会 It's got 16 times the storage, it holds 16 times the music, it's half the thickness and it's 50 bucks more. 存储空间是其他MP3播放器的16倍，可以多存16倍数量的歌曲，厚度只有其他MP3播放器的一半，售价仅仅贵了50美元。
英语百科
Half-value layer（重定向自Half thickness）
A material's half-value layer (HVL), or half-value thickness, is the thickness of the material at which the intensity of radiation entering it is reduced by one half. HVL can also be expressed in terms of air kerma rate (AKR), rather than intensity: the half-value layer is the thickness of specified material that, "attenuates the beam of radiation to an extent such that the AKR is reduced to one-half of its original value. In this definition the contribution of all scattered radiation, other than any [...] present initially in the beam concerned, is deemed to be excluded." Rather than AKR, measurements of air kerma, exposure, or exposure rate can be used to determine half value layer, as long as it is given in the description. |
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