Half-value layer(hvl)
[化] 半值层; 半值厚度
🧩 词语组成解析
half
[hæf]
adj. 一半的，半个的;
n. 半;一半;（啤酒等饮料的）半品脱;（比赛、音乐会等的）半场;
adv. 一半;部份地;
🗣️ 情景例句
It's well worth the time.
这很值得花时间。
What we learn with pleasure we never forget.
乐意学的东西决不会忘记。
It is recounted of Thomas Carly1e that when he heard of the illness of his friend,
他听说朋友病了，