Bhn
abbr. 布氏硬度值（Brinell hardness number）
??? 情景例句
We condemn violence.
我們譴責(zé)暴行。
I'm going to call the employment agency for a job.
我將打電話給職業(yè)介紹所找一個(gè)工作。
He was just falling asleep when there was a loud knock at the door.
他剛要入睡，就有人很響地敲門。