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阀配置图阀4柱4RGA方案2柱2柱3柱5阀1柱1柱1: 柱2: 柱3: 柱4:阀2阀32 ft x 1/8 in. 20% 葵二腈 on 80/100 Chromasorb PAW 30 ft. x 1/8 in. 20%葵二腈 on 80/100 Chromasorb PAW 6 ft. x 1/8 in. Porapak Q 80/100 4 ft. X 1/8 in. 分子筛13X 45/60目柱5: 10 ft. X 1/8 in. 分子筛13X 45/60目