The hydroxyl ion has a negative charge.
氢氧根离子有一个负电荷。
The hydroxyl ion has a negative charge .
氢氧根离子有一个负电荷。
And ion, which is an atom or group of atoms with an electrical charge.
和离子，它是一个原子或原子的电荷组。
The anion is one kind of air ion with negative electric charge.
负离子是一种带负电荷的空气离子。
Air negative charge ion concentration (ANCIC) has a close relationship with air quality.
空气负离子浓度与空气环境质量密切相关。
The positive charge of metal ion determines the strength of the acid.
而金属离子的电荷决定了酸的强弱。
The positive charge of metal ion determines the strength of the acid.
而金属离子的电荷决定了酸的强弱。
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