7y

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。