Nbr
abbr. 腈基丁二烯橡胶（nitrile -butadiene rubber）
🗣️ 情景例句
Is that it?
就这些吗？
Misfortune is a good teacher.
不幸是良师。
This is No. 1 Machine Shop. Keep together, please! said Uncle Wang.
“这就是第一机械车间。 请大家靠拢点！”王大叔说。