The other main type of chemical pulping is called the sulfite process.另外一种重要的化学制浆称亚硫酸盐工艺.Introduced into a batch pulping process, this control method performs very well.我们在造纸车间的纸浆蒸煮过程中采用了这种控制方法,取得了良好的效果.Wasterwater from ...
Soot is the product of the imperfect combustion of fuel.煤烟是燃料不完全燃烧的产物.... a wall blackened by soot.被煤烟熏黑的墙壁The parks and squares looked grim under a mantle of soot and ash.在一层烟尘的笼罩之下,公园和广场显得阴沉沉的。Soot is usually the produ...