alaoa造句

• The dry sliding wear properties of ptfe composites filled with surface treated and untreated nano - alaoa were tested on the model mm - 200 tester , the effects of filled nano - abos content >
  利用mm - 200型磨损试验机考察了纳米al _ 2o _ 3含量、载荷和对摩时间对表面处理纳米al _ 2o _ 3填充ptfe复合材料在干摩擦滑动条件下摩擦磨损性能的影响。