Cellulasepoor xylanases can reduce the content of fines in the light weight coated secondary fibers and increase drainage rate under appropriate enzymolysis condition.
The drawbacks are acacia's low drainage rate and low initial wet web strength, which are bottlenecks to the high paper machine speed especially at the web forming.
需要改进的地方是:它的滤水速率和湿纸幅强度较低,这些将是现代高速纸机湿部的瓶颈所在。
In controlling factors of high permeability, the deformation of coal, coal fracture direction, ground stress and drainage rate were discussed.
在渗透率控制因素方面,从煤体变形、煤层裂隙方向、地应力和排采方面对其进行探讨。
While, birch has much faster drainage rate and highest solids content of the wet web, though its low retention properties need to be further improved.