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- Hydrogen sulphide: Rotten egg gas. 硫化氢（味）：臭鸡蛋味。
- Water contains hydrogen and oxygen. 水含有氢和氧。
- Water is composed of hydrogen and oxygen. 水由氢和氧组成。
- sulphide hydrogen 硫化氢
- They found hydrogen sulphide levels decreased in 80% of Process Pipe . 他们发现受试者口腔内的硫化氢含量降低了80%25。
- Water is composed of the elements hydrogen and oxygen. 水是由氢元素和氧元素组成的。
- Hydrogen sulphide bearing gas or water is postulated to be an important reductant in several areas. 含硫化氢的气体和水被认为是某些地区的一种主要的还原剂。
- Water may be resolved into hydrogen and oxygen. 水可以分解为氢和氧。
- The hydrogen is the known the lightest element. 氢是已知的最轻的元素。
- Hydrogen and oxygen combine/Hydrogen combines with oxygen to form water. 氢与氧化合成水。
- A molecule of water consists of two atoms of hydrogen and one atom of oxygen. 水分子含有两个氢原子和一个氧原子。
- Water can be dissolved into hydrogen and oxygen. 水能分解成氢和氧。
- Researchers then took saliva and tongue coating samples to measure bacteria levels and odour-causing compounds, including hydrogen sulphide. 然后研究者们提取了他们唾液和舌苔的样本，用于测量（口腔内的）细菌水平和能诱发异味的化合物，如硫化氢。
- Both hydrogen and oxygen are elements. 氢和氧都是化学元素。
- Hydrogen is a one-valence element. 氢是一价的元素。
- This product can reduce the odor of animal excretion , ammonia and hydrogen sulphid, reduce contamination. 减少排泄物之氮源，降低氨及硫化氢之臭味，改善环保。
- Water is a compound of hydrogen and oxygen. 水是氢和氧的化合物。
- And the sulphide mineral deposits lie directly on the sea floor. 而硫化物矿藏直接坐落在海床上。
- This metal acts on water to set hydrogen free. 这种金属作用于水，就释放了氢气。
- Water can be broken down into hydrogen and oxygen. 水可以分解为氢和氧。
