The present situation for pestling coking technology of our country is that it has few stamp-charging coke ovens and have insufficient financial resources for enterprise. 论述了国内捣固焦技术的现状是捣固焦炉数量少,企业财力不足。
This chapter also presents the procedures of jade production, such as pounding, pestling, raw material selection, material outlining, peeling, designing, rough carving, delicate carving, exquisite maintaining, polishing and so on. 比较系统介绍了制玉工艺的捣砂和研浆、选料、剥皮、设计、粗雕、细雕、修整和抛光等工序。