FCUBNC¹⁷³⁹⁹⁵⁺² 基本例句 = Federal Credit Union 联邦信贷联盟美 DMC has about3 times the oxygen content as methyl tert-butyl ether MTBE and its synthesis is not dependent upon FCU isobutylene yields like MTBE. DMC的含氧量大约是甲基叔丁基醚 MTBE的三倍，它的合成也不像 MTBE那样依赖于异丁烯的产量。 fabiao