以下为句子列表：
英文: Failure situations on bearing bushes from October of 1999 to the two units are generalized, The main causes are divided into four classes: bearing bushes with low quality, overproof on dynamic balance, bad crapping to bearing bushes, and bad fluid oil.
中文: 通过对该厂1999年10月投产以来的两台离心鼓风机的轴瓦失效情况进行的统计，将造成轴瓦失效的主要原因分成4类，即：轴瓦质量差、转子动平衡超标、研刮不良以及润滑油油质不佳等。
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英文: The overproof rate are 27.5%-43.3% in 1-3 months and 8.9%-18.0% in 6 month after decoration.
中文: 抽样调查监测本市某区114间公共场所及家居室内空气中甲醛含量。
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