5500光年远处，猫爪星云是一个发射星云，红色来源于其丰富的电离状态的氢原子。
At 5, 500 light years distant, Cat's Paw is an emission nebula with a red color that originates from an abundance of ionized hydrogen atoms.
等离子体——一种有时被称为物质第四状态的电离气体——通常存在于上千摄氏度中，而热等离子体常常被用于外科手术器械的消毒。
Plasma — an ionized gas sometimes called the fourth state of matter — typically exists at thousands of degrees Celsius, and hot plasmas are regularly used to sterilizing surgical equipment.
溶液酸度影响PAR的电离平衡和存在状态，因而影响散射光谱。
Acidity of the solutions influenced the acid-base equilibrium of PAR and its existing state, thereby (influenced) the RLS intensity.
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