Nbr
abbr. 腈基丁二烯橡胶（nitrile -butadiene rubber）
🗣️ 情景例句
Here's a brief description
这是一份简单的记录
That's fine. What time do I have to be at the airport?
好的。我应该几时到达机场？
Yet a great many processes depending on such research are sought for with complete secrecy until the stage at which patents can be taken out.
然而，依赖这种研究的很多工艺程序是在完全保密的情况下进行的，直到可以取得专利权的阶段为止。