Nitrogen pentoxide
[化] 五氧化二氮
🧩 词语组成解析
n. [化]五氧化物
🗣️ 情景例句
Why, I didn't know that your grandfather was born in Germany.
你看 我竟然不知道您的爷爷出生在德国。
He that knows nothing, doubts nothing.
无知就无疑。
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。