氟化钙晶体光学长方体, Calcium fluoride crystal optic rectangle

驼绒毛刷(3/pkg), Camel Hair Brushes (3/pkg)

一次性红外光谱片, Disposable IR cards

校准用标准, Calibration standard for MSB

美国标准分子筛, USA Standard Sieve

美国标准分子筛, USA Standard Sieve

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

Al-23坩埚, Al-23 Crucible

Al-24坩埚, Al-24 Crucible