Kjeldahl nitrogen analysis的用法和樣例：
例句
- The Kjeldahl is a general analysis method for determining nitrogen in rubber.
凱氏定氮法是測定橡膠中氮含量的常規分析方法。 - Melamine lawless elements will be added to the raw milk, the drill is the Kjeldahl method of loopholes in the milk protein content.
不法分子將三聚氰胺添加到原料奶中，鑽的是凱氏定氮法測定奶粉蛋白質含量的漏洞。
