它将清洁曲奇档案，将从未使用过。
从使用价值的角度看，档案信息增值主要是在使用过程中的增值，效益定价是档案信息增值的关键原则。
From the perspective of usage value, the multiplication of archive information is mainly completed through frequent use, and benefit pricing is the key principle.
这个有他亲笔标记的谱子正是他使用过的。现在这个论断已经被确定下来，并记录在柴可夫斯基州立博物馆的档案中，所以我们知道这是演奏过的音乐文本。
It has now been established in the archives at the Tchaikovsky State Museum that this is the score he used which has markings in his hand, so we know that this is the musical text that was played.
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