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7y

7y7y
  1. All the patients were followed up from 1 . 8 to 3 . 5 years ( mean , 2 . 7y ) .

    所有患者随访1.8~3.5年,平均2.7年。

  2. Taking carriage plate of model 7Y 950 three wheel farm transporter as example , the roll shaping processes of carriage plate and the design of rolling unit are introduced .

    以7Y950三轮农用运输车货厢厢板为例,介绍了货厢厢板滚压成形工艺和滚压成形机组的设计。

  3. The results show that the as solidified melt spun Al 91 Ni 7Y 2 alloy is a kind of composite consisting of amorphous matrix and Al particles distributed homogeneously in matrix .

    结果表明:急冷态的Al91Ni7Y2合金为部分Al粒子均匀分布在非晶基底上的复合材料。