Clay coats can be particularly important as inhibitors of later quartz cementation . 粘土包壳作为石英晚期胶结作用的抑制剂可能是特别重要的。
2.
Papers can be clay coated for surface smoothness and opacity giving high quality finishes suitable for high quality printing processes 要得到适于高质量印刷工艺的高品质加工纸，为了表面平滑度和不透明度的需要，纸上可能涂布白土。
