“氮的”造句

空气中所含的氮的比例是多少?
What is the percentage of nitrogen in air?

作物收获后, 他测定了作物中氮的含量.
After harvesting the crops , he tested them for nitrogen content.

不含碱性氮的化合物包括吡咯 、 吲哚 、 咔唑和苯咔唑.
Non - basic nitrogen - containing series include pyrroles, indoles, carbazoles and benzcarbazoles.

• #氮的