hydroxyl ion
noun [ C ] chemistry specialized uk/haɪˌdrɒk.sɪl ˈaɪən/ us/haɪˌdrɑːk.sɪl ˈaɪ.ən/
氢氧离子;羟离子(有一个氧原子和一个氢原子组成的带有负电荷的离子)
an ion with a negative charge, consisting of an oxygen atom and a hydrogen atom
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