四氧化钌（Ruthenium Tetroxide），分子式为RuO4，分子量为165.07。为铂系金属钌的+VIII氧化态的四氧化物。 金黄色针状晶体，有挥发性及刺激气味。有毒!熔点为25.5℃，108℃时分解，光能使其缓慢分解。
方法：裸鼠表皮分别用四氧化钌和锇酸固定后电镜下观察裸鼠表皮角质层脂质的超微结构。
Methods: Ruthenium tetroxide and osmium tetroxide were compared as post fixative in the preparation of hairless epidermis for transmission electron microscopic examination.
本文采用四室电渗析槽，分别以钛涂钌电极和钛基二氧化铅电极为阳极，不锈钢为阴极，进行了电解法制备次磷酸的实验研究。
In this paper, Ti PbO 2 and Ti Ru used as anode and stainless steel used cathode in producing hypophosphorous acid by electrolytic process with four compartment electrodialytic cell was studied.
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