一次性红外光谱片, Disposable IR cards

超细孔样品管, Ultra thin-bore sample tubes

USA标准分子筛, USA Standard Sieve

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 Tube

Al-23绝缘管, Al-23 Insulating Tube

Al-23鱼脊状珠;外径 (mm), Al-23 Fish Spine Beads;OD (mm)