按照传统作法，这些镜板都是大型抛光的金属板块，由电动马达操纵，以保持阳光能集中反射到太阳能电池上。
Traditionally these are large pieces of polished metal, steered by electric motors to keep the sun's rays focused on the cell.
因此，提高推力瓦、镜板检修质量；改善润滑性能、冷却器冷却效果等对解决大型立式循环泵推力瓦轴承磨损有重要意义。
Therefore, the improvement of repairing quality, lubrication and cooling performance of cooler is very important for the abrasion problem of thrust bearing to be solved.
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