第四纪花粉无酸碱分析方法，是从第四纪沉积物中提取花粉的一种行之有效的方法。
The acid_alkali_free analysis is a very useful method for extraction of pollen from Quaternary sediments because of its technical simplicity and easiness in operation.
通过对大别山北缘第四纪沉积物的研究，分析近百万年来该地区的地质构造变化及其变化与淮河的形成、演化的关系。
Studies on the land sediment laying over the Dabie Mountains, can help us to find the change in this area and the law between this change and Huaihe river's evolvement.
文中提供的一些海底沉积物的地质分析、14C测年等资料和采用的研究方法对今后南海北部大陆架的第四纪地质、海底沙波以及海底稳定性研究均有参考价值。
Some of the geological analyses on seafloor sediments, 14C data and the adopted methods provided in the paper have all a certain reference value for future studies on Quaternary geology, …
表土沉积物中的植硅体分析是了解第四纪沉积物中植硅体组成的重要途径，也是重建第四纪古环境的基础。
Phytolith analysis in the surface soils is not only an important approach of studying phytolith assemblages in the Quaternary sediments, but also a basis of Quaternary environment reconstruction.
表土沉积物中的植硅体分析是了解第四纪沉积物中植硅体组成的重要途径，也是重建第四纪古环境的基础。
Phytolith analysis in the surface soils is not only an important approach of studying phytolith assemblages in the Quaternary sediments, but also a basis of Quaternary environment reconstruction.
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