塑料—青铜—钢背三层复合自润滑材料的应用

DEVELOPMENTS AND APPLICATIONS OF PLASTICS-BRONZE-STEEL BACKED THREE LAYERS COMPOSITE SELF-LUBRICATING MATERIALS

本文简扼地介绍了英国Glacier金属公司首创的“DU”材料和国内七十年代末期不少单位相继研制的类“Du”塑料—青铜—钢背三层复合自润滑材料的发展概况;对该材料的结构、性能作了一般性的介绍;较为详细地讨论了利用该材料的优异特性于实际中所取得的良好效果。

There were 12 cases of Marie's Ataxia among 90 individuals of 6 generations in one family. The Dedigree was complete and reliable. The conclusion is that the disease is somatic chromosome dominant inheritance. It has a tendency of 'earlier episode'. The investigation at continuous 4 generations showed that the age of episode in the next generation was younger than the previous about 10 years, and the later the generation get. the more severe the clinical symptoms were.