| 1. | Water is a compound containing the elements hydrogen and oxygen .
水是含有氢元素和氧元素的化合物。 |
| 2. | After hydrogen, the atom with the simplest structure is that of helium .
在氢元素之后，氦的原子结构最简单。 |
| 3. | It gets the hydrogen and helium right
根据结果表示，氢元素和氦元素都比较正常。 |
| 4. | But after that , the hydrogen begins to run out
在那之后，氢元素将被消耗殆尽。 |
| 5. | The elements hydrogen and oxygen combine to form water
氢元素和氧元素构成了水 |
| 6. | Water is composed of the elements hydrogen and oxygen
水是由氢元素和氧元素组成的 |
| 7. | Carbon and hydrogen analysis meter
碳氢元素分析仪 |
| 8. | Determination of carbon and hydrogen content for carbon fiber and its products
炭纤维及其制品碳氢元素分析方法 |
| 9. | The star used to be like the sun , a “ main sequence ” star that burns hydrogen by nuclear fusion , producing helium
该恒星和太阳一样是一颗主星序恒星，氢元素通过核裂变生成氦元素。 |
| 10. | This is composed of a mixture of deuterium ( a rare isotope of hydrogen ) and lithium ( a light metal )
核弹的主体部位由一种氘与锂的混合物组成，氘是一种稀有的氢元素的同位素，而锂则是一种轻金属。 |
