Bhn
abbr. 布氏硬度值（Brinell hardness number）
🗣️ 情景例句
Here it is.
在这里。
One never loses anything by politeness.
有礼貌对自己不会吃亏。
It did not take the firefighters long to put out the fire, and they at once started to look for causes of the fire.
消防队员没花多时间就把大火扑灭了，他们马上开始调查火灾发生的原因。