| 1. | Zinc displaces the hydrogen of dilute acids .
锌置换了稀酸中的氢。 |
| 2. | Water is composed of hydrogen and oxygen .
水由氢与氧化合而成。 |
| 3. | Water consists of hydrogen and oxygen .
水由氢和氧二元素合成。 |
| 4. | Water is composed of hydrogen and oxygen .
水是由氢和氧组成。 |
| 5. | The hydrogen sulfide is often blamed for the corrosion .
硫化氢常常引起腐蚀。 |
| 6. | Nitric acid molecules are linked by hydrogen bonds .
硝酸分子以氢键互相连结。 |
| 7. | Water can be resolved [decomposed] into hydrogen and oxygen .
水可分解为氢和氧。 |
| 8. | Water is composed of the elements hydrogen and oxygen .
水是由氢、氧元素组成的。 |
| 9. | Hydrogen is a one-valence element .
氢是一价的元素。 |
| 10. | Catalase catalyes the breakdown of hydrogen peroxide .
过氧化氢酶催化过氧化氢的分解。 |
