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石膏型铸造中型铜钟的实践西安理工大学（陕西省西安市７１００４８）周永欣俞学芬西安金属结构厂周喜顺ＰｒａｃｔｉｃｅｏｎｔｈｅＰｌａｓｔｅｒＭｏｌｄＣａｓｔｉｎｇｆｏｒＭｉｄｄｌｅｓｉｚｅＢｒｏｎｚｅＢｅｌＺｈｏｕＹｏｎｇｘｉｎＹｕＸｕｅｆｅｎ（Ｘｉａ...
Gypsum casting medium-sized bronze bell practice Xi’an University of Technology (Xi’an, Shaanxi Province 710048) Zhou Yongxin Yu Xuefen Xi’an Metal Structure Factory Zhou Xi Shun PracticeonthePlasterMoldCastingforMiddlesizeBronzeBelZhouYongxinYuXuefen (Xia ...