PTFE composites filled with irregular bronze powder have better mechanical properties, but PTFE composites filled with spherical copper powder have better wear resistance.
不规则青铜粉填充的PTFE复合材料具有较好的力学性能，但是球形铜粉填充的PTFE复合材料具有较好的耐磨损性能。
Appearance: a pale yellow brown or light yellow irregular fragments or coarse powder, with roasted soy aroma.
外观：呈浅黄褐色或浅黄色不规则的碎片状或粗粉状，具有烤大豆香味。
The system parameters are optimized according to the influencing rules for transferring irregular micro chromium powders, and the effects of powder transfer are experimentally investigated.
以此规律为依据，确定和选择铬粉脉冲输送的系统参量，验证粉体微输送效果。
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