The wearing tests of the knitted acrylic fabric of self-twist and ring spinning yarn is conducted by means of the wear testing instrument, the wear trial and the scanning election microscope.
本文介绍了用耐磨仪、试穿和扫描电镜三种试验手段，对自捻纱和环锭纱腈纶针织物所作的耐磨性能测试情况。
In a six-week trial commissioned by Skechers, a dozen women were given the shoes and told to wear them during their normal daily activities and walking programs.
在Skechers委托进行的一次为期六周的试穿活动中，有12位女士参加了试穿，在日常活动以及走路运动时穿着Skechers鞋子。
At present, the technical parameters and the wear rate of the retaining ring are confirmed through trial or experience, which usually has longer periods, higher cost and larger waste.
目前关于保持环工艺参数和磨损率的确定都是依靠反复的试验或经验确定，周期长，成本高，浪费大。
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