GB/T 40738-2021熔模铸造硅溶胶快速制壳工艺规范标准
英文:Investment casting—Technical specification for rapid shell build with colloidal silica binder GB/T 40738-2021介绍: 国家标准...
英文:Investment casting—Technical specification for rapid shell build with colloidal silica binder GB/T 40738-2021介绍: 国家标准...