xploratory experiments have been carried out in which pines are cooked with the acid sulfite process to produce the pulp for tracing paper.
本文就松木用酸性亚硫酸盐法蒸煮,生产描图纸浆进行了探讨性试验。
CopyRight © 2020-2024 优校网[www.youxiaow.com]版权所有 All Rights Reserved. ICP备案号:浙ICP备2024058711号