混合气 CO2+He+Ar
Complex gas
1. 组分：2%CO2+1%He+Ar
2. 钢瓶：12L 20L 40L
3. 阀门：CGA DIN BS DISS
ENGLISH
Complex gas
1. 组分：2%CO2+1%He+Ar
2. 钢瓶：12L 20L 40L
3. 阀门：CGA DIN BS DISS
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