preparative method

• 制备方法

preparative method的用法和样例：

例句

1. The invention discloses a composite resin and a preparation method thereof.
   本发明公开了一种复合树脂及其制备方法。
2. Main preparation methods of the supersoft polyurethane foams are reviewed.
   概述了超软质聚氯酯泡沫的几种主要制备方法。