xylidines造句

例句与造句

1. BMW developed engines burning a hypergolic mix of nitric acid with various combinations of amines, xylidines and anilines.
2. The chemical formula of xylidines is C 8 H 11 N, or ( CH 3 ) 2 C 6 H 3 NH 2.
3. It's difficult to find xylidines in a sentence. 用xylidines造句挺难的