Papers can be clay coated for surface smoothness and opacity giving high quality finishes suitable for high quality printing processes. 要得到適于高質(zhì)量印刷工藝的高品質(zhì)加工紙，為了表面平滑度和不透明度的需要，紙上可能涂布白土。
The results showed that fiber coarseness is changed duringbeating,thus greatly affecting the physical properties and opacity of handsheet. 結果表明，打漿能改變纖維的粗度，從而影響手抄片的物理性能和不透明度。
coefficient of opacity nontransparency的相關(guān)資料：
