| 1. | After harvesting the crops, he tested them for nitrogen content .
作物收获后，他测定了作物中氮的含量。 |
| 2. | Some methods to reduce nitrogen content in liquid argon
减少液氩中含氮量的几点做法 |
| 3. | Determination of urea determination of total nitrogen content
总氮含量的测定 |
| 4. | Test methods for nitrogen content of nitrogen - doped getter
掺氮吸气剂含氮量测试方法 |
| 5. | Standard test method for rubber - nitrogen content
橡胶的标准试验方法.氮含量 |
| 6. | Iron and steel - methods for determination of nitrogen content
钢铁中氮含量的测定方法 |
| 7. | Collagenes . determination of the nitrogen content
骨胶原.氮含量的测定 |
| 8. | Determination of urea - determination of total nitrogen content
尿素测定方法总氮含量的测定 |
| 9. | Milk - determination of casein - nitrogen content - direct method
乳.酪蛋白氮含量测定.直接方法 |
| 10. | Milk - determination of nitrogen content - kjeldahl method
牛奶.氮含量的测定.基耶达法kjeldahl |
