例句與造句

1. Technetium tetrachloride can be synthesized from the reaction of Cl 2 ( g ) with technetium metal at elevated temperatures between 300-500 癈:
2. Technetium tetrachloride has also been prepared from the reaction of ditechnetium heptoxide with carbon tetrachloride in a bomb reaction vessel at elevated temperature and pressure:
3. It's difficult to find technetium tetrachloride in a sentence. 用technetium tetrachloride造句挺難的