PHn.[化]酸碱度(=Potential Of Hydrogen)abbr.公共卫生(=Public Health)abbr.紫心勋章(=Purple Heart)phosemet亚胺硫磷

1. New information on the response of vegetation to air-fall volcanic ash is provided by analysis of phytoliths from sediments containing major tephra beds.
   含火山灰层沉积的植硅体分析为了解植被对从空中下降的火山灰的反应提供新的信息。
2. It shows that phytolith has its own advantage in paleo-evironmental reconstruction of peat bogs, and will be of great help in discriminating the palaeo-climatic change.
   对泥炭沉积中的植硅体进行了分析，初步证实植硅体对重建泥炭地古环境变迁模式起着重要的作用，对提高古气候变化的分辨率有很大的帮助。