different preservation methods的用法和样例：
- Cultivar "Xiaohongmao" of China rose was selected as the research matierials in this study,and the preserving effects of different preserving methods were compared.
- Influence of different preservation methods of biological indicator on the monitoring of sterilization
- Effect of different preserved methods on morphology -structure of cornea and Langerhans cell
- In this paper, comparisons of Leuconostoc mesenteroides with three different method including freeze-drying preservation, slant preservation and liquid wax preservation method had been studied.
- China has adopted the on-site conservation and off-site preservation methods to protect biodiversity.