分析了设计天然气水合物保真取样系统的理论基础，即天然气水合物的化学性质、天然气水合物的形成及稳定条件。

The basic theory about how to design a in-situ sampling system has been discussed firstly based on chemistry properties and conditions of gas hydrate formation.

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作者于2000年和2002年对青藏高原东部长江河流溶质载荷进行了较为系统的野外取样工作，并对主要离子地球化学特征进行了分析研究。

The examination of major ion geochemistry is based on the field sampling of the dissolved loads from the Changjiang River on eastern QinghaiXizang Plateau in the years of 2000 and 2002.

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通过对烃源岩和原油系统取样与地化分析，剖析了烃源岩与原油的地球化学特征，建立了源-藏空间对应关系。

Through systematic sampling and geochemical analysis the geochemical characteristics of source rock and oil are clearly and the spatial relationship between them has been established.

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