Novel trifluoropropylmethylsiloxane dimethylsiloxane (PDMS-PTFPMS)/ polyvinylidene fluoride (PVDF) membranes were develo......

生产某些化工产品需要测定其回收溶剂甲醇、汽油、丁醇、水四元组份的含量，收便回收再地确保其工艺条件。采用两台气相色谱仪来完成......