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
Oh, not if I can stop him!
噢， 要是我能阻止他， 他就甭想！
How often did I tell you not to yell in the house?
我告诉你多少次不要在房子里大叫?
But when the train dawdled at station after station, I began to wonder,
但是，当火车一站接着一站往前蠕动时，我便产生了怀疑。