Syntheses of low - molecular weight polyacrylic acid sodium with water as solvent and APS - SHS as REDOX initiator are studied.
以水为溶剂，过硫酸铵-亚硫酸氢钠氧化还原引发体系，研究了低分子质量聚丙烯酸钠的合成。
However, the friction coefficient between Ni and APS increased with sliding velocity increasing and reduced with load increasing.
而镍与APS间的摩擦系数随滑动速度的增大而增大，随载荷的增大而减小。
However, the friction coefficient between Ni and APS increased with sliding velocity increasing and reduced with load increasing.
而镍与APS间的摩擦系数随滑动速度的增大而增大，随载荷的增大而减小。
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