The vanadium phase and valence state of stone-coal with low carbon in Guizhou province were analyzed by electron probe, and a pressure acid leach experiment was carried out.
利用电子探针分析方法对贵州某地低碳石煤中钒矿物和价态进行了分析，并对该矿石进行了加压酸浸试验研究。
Objective: to observe the morphological change of bacteria in the cholesterol stone under electron microscope and to explore the action of bacteria in the formation of stone.
目的：通过电镜观察胆固醇结石内的细菌形态学变化，探索细菌在成石中的作用。
The pathological changes including lipid plaque by gross inspection and cobble stone like structure by scanning electron microscopy were most serious in high lard group, and least in low lard group.
病变为肉眼可见的脂斑和扫描电镜下的鹅卵石样结构，在高猪油组最重，低猪油组最轻。
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