17.2怎么理解
17.2 Replacement of the fifth paragraph, except for belt sanders:Orbital sanders and polishers, random orbit sanders and polishers, and reciprocating sanders
and polishers are operated while the platen, fitted with abrasive paper in reverse position or a
polishing bonnet as applicable, is resting under the weight of the sander or polisher on a steel
plate. The abrasive paper should be replaced as required to avoid direct contact between
platen and steel plate. These tools are only tested in the upright position where the platen is
horizontal.
哪位大侠可以帮忙说下上面这段是什么意思
小弟看了半天还是没搞明白 电动机的不懂，不好意思 尤其是最后一句These tools are only tested in the upright position where the platen is
horizontal.
器具垂直放置的话 底盘不也是垂直的吗？怎么会是水平的呢？ 整段的意思就是除了砂带机，其余被60745－2－4涵盖的砂光机在做耐久的时候，都要将砂纸反装在底板上（如果是抛光盘就正常安装），然后就将机器竖直向上放在一块钢板上运行。最后那几句话实际上是针对通用要求说的，因为通用要求里面工具是三个方向运行的，而砂光机只是一个方向，就是竖直向上。当机器竖直向上，底板当然是水平的。再仔细想想？
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