| 1. | The physical methods include mechanical scarification , low and high temperature , hydration - dehydration , irradiation , high pressure and other physical treatments , and the chemical ones include acid scarification , alkali solution soaking and other organic chemical treatments
物理方法有机械损伤、低温和高温处理、干湿交错处理、辐射和高压处理等；化学方法有酸蚀、碱液浸泡和有机溶剂等处理。 |
