must a white gypseous statue need to be drawn darkly?
原本是白色的石像,一定要画得黑?
must a white gypseous statue need to be drawn darkly?
原本是白色的石像,一定要画得黑?
The specific properties of gypsum and its slurry, the effect of different refractories on the properties of plaster molding, and how to control main process of gypseous mold are analyzed.
大量试验研究的基础上,阐述了有关石铸工艺的几个要技术问题,分析了石及其浆料的特,各种填加物对石能的影响,以及如何控制石铸造的要工艺过程
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