以下为句子列表：
英文: In photography, a fixing bath containing NH (univalent ion of ammonia), which is used for removing silver halides from photosensitive emulsions.
中文: 中义在摄影中，一种含铵的定影液，用来将感光乳剂中的银粒子去掉。
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英文: The activation effect of univalent ions (K+ and Na+) on GAT enzyme activity was stronger than that of divalent ions (Mg2+ and Mn2+), among which Na+ was the strongest and the GAT enzyme activity was obviously inhibited by Ca2+.
中文: 检测了6种金属离子对酶活性的影响,发现单价离子K+和Na+对GAT的激活作用高于双价离子Mg2+和Mn2+,其中Na+的激活作用最强,而Ca2+有明显的抑制作用。
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