Method:Count and analyze the trouble featrues during early period and stable period of domestic linear,accelerator according to the trouble mainten records.

　
英 美
  • 方法:根據直線(xiàn)加速器故障維修記錄,統計和分析直線(xiàn)加速器磨合期和平穩期故障率和故障特點(diǎn)。
今日熱詞
目錄 附錄 查詞歷史
国内精品美女A∨在线播放xuan