更多selenium例句

1. “This proposed settlement will hold the company to account for its selenium pollution and helps fund an environmental project that benefits the Tug River,” said Karan Ireland, the West Virginia Sierra Club’s senior campaign representative.
2. He was also the person who first identified silicon, selenium, thorium, and serium.
3. (a) Organic selenium compounds were reviewed and their properties examined critically with those of allied compounds.
4. (d) Two series of azo dyes of selenium have been prepared and have been shown to possess a marked tinctorial value.
5. Since Berzelius published the first resume of the chemistry of selenium, in 1818, many articles have appeared in this field.
6. No attempt has ever been made to compile a bibliography of selenium organic compounds.
7. The general conception of selenium is that it is a comparatively rare element.