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

氟化钡晶体光学盘, Barium 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

4毫米模组, 4mm Die Set for KBr Quick Press Kit

不锈钢小瓶, Stainless steel vial

USA标准分子筛, USA Standard Sieve

美国标准分子筛, USA Standard Sieve

Al-23管(一端封口);外径 (mm), Al-23 Tube (one end closed);OD (mm)