多元素QC-7检测标准溶液, Multi-Element QC-7 Check Standard Solution

溴化钾晶体光学盘, Potassium bromide crystal optic disc

氟化钙晶体光学盘, Calcium fluoride crystal optic disc

溴化钾晶体光学盘, Potassium bromide crystal optic disc

氯化钠晶体光学盘, Sodium chloride crystal optic disc

溴化钾晶体光学长方体块, Potassium bromide crystal optic rectangle

2毫米模组, 2mm Die Set for KBr Quick Press Kit

磁化率平衡器, Magnetic Susceptibility Balance

USA标准分子筛, USA Standard Sieve

美国标准分子筛, USA Standard Sieve