The composition of oxygen isotope is a good tool to trace the origin and formation environment of sulfate.
氧同位素组成是一个非常有效的示踪硫酸盐的起源和形成环境的工具。
Geochemical characteristics of two types of gabbro suggest that their formation environment is an oceanic ridge of low spreading rate.
两类辉长岩的地质地球化学特征表明它们可能形成于慢速扩张的洋脊环境。
The studying gives the microscopical evidences for research on the tonstein's genesis and coal formation environment.
此项研究可为探讨高岭石夹矸的成因及成煤环境提供微观依据。
The origin and formation environment of phosphates associated closely with cobalt-rich crusts dredged from Western and Central Pacific submarine guyots have been investigated.
笔者首次对太平洋与大洋富钴结壳密切相关的海山磷酸盐的成因及形成环境进行了比较深入的研究。
A lot of Yanshanian intermediate acid magmatic rocks in eastern China have similar geochemical characteristics to the adakite, their formation environment however is unrelated to subduction process.
中国东部燕山期有许多中酸性岩浆岩类似埃达克岩的地球化学特征，但其形成环境却与消减作用无关。
The determination of pipeline crossing scheme in large-scale rivers is influenced by geological conditions, hydrologic conditions, formation, environment and flood.
长输管道的大型河流穿跨越方案的确定受地质条件、水文条件、地层情况、周围环境、防洪等诸多因素的影响。
The determination of pipeline crossing scheme in large-scale rivers is influenced by geological conditions, hydrologic conditions, formation, environment and flood.
长输管道的大型河流穿跨越方案的确定受地质条件、水文条件、地层情况、周围环境、防洪等诸多因素的影响。
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