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

7毫米模组, 7mm Die Set for KBr Quick Press Kit

球杵; 清树脂玻璃; 3/8 直径meter, Ball pestle; clear plexiglas; 3/8" diameter

美国标准分子筛, 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)

Al-23管(两端开口);外径 (mm), Al-23 Tube (both ends open);OD (mm)

Al-23绝缘管, Al-23 Insulating Tube