结果表明,添加聚丙烯酰胺可以明显提高精煤产率、尾煤灰分,亦可以提高煤泥水澄清度,显著加快过滤速度,降低滤饼水分。
The data confirms that the rate at which these diseases are declining continues to accelerate.数据证实,这些疾病的下降速度继续加快。
And there are reasons to expect the rate of decline to accelerate.并且有理由预期下跌的速率还会加快。