GB/T 12809-1991.Laboratory glassware- Principles of design and construction of volumietric giassware...
GB国家标准
GB国家标准
GB国家标准
GB/T 12809-2015 实验室玻璃仪器玻璃量器的设计和结构原则
GB/T 12809-2015.Laboratory glassware-Principles of design and construction of volumetric gl assware....