In this paper, less chlorine bleaching of mixed hardwoods kraft pulp was investigated.
对硬杂木硫酸盐浆的少氯漂白进行了研究。
The changes of species composition in a 76 year old Chinese fir community,which was originally occupied by a broad leaved community,were studied based on the data collected from sample plots with an area of 1 200 m 2 in Ancaoxia,Nanping,Fujian Province.
通过 1 2 0 0m2 标准地调查 ,研究福建南平溪后村安曹下 76年生杉木丰产林取代杂木林后群落物种组成的变化。
0°SR)of that kind of mixed hard wood was produced with the yield of 76.
对辽宁东部山区次生林中的混合硬杂木 ,利用APMP制浆方法进行了研究。