natural seasoning

• 自然时效,自然干燥

natural seasoning的用法和样例：

例句

1. So the critical point drying method is better than the natural drying method for palynology research.
   进行孢粉学研究，临界点干燥法优于自然干燥法。
2. This machine mainly mixes the crushed sponge and glue to pressurize, whereafter shaped by steaming or natural drying.
   本机主要把碎海绵与胶混合在一起加压，用蒸汽成型或者自然干燥。