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
Besides Chinese New Year, what are the other festivals according to the Lunar Calendar?
农历新年以外还有什么节日？
Tom's been feeling blue ever since his divorce.
自离婚以来，汤姆一直很忧郁。
Sorry. I'm free every day except today.
对不起。我每天都有空，唯独今天没空。