短语词组短語vacuum sugar permeability technology 真空滲糖技術vacuum sugar permeability 真空滲糖absolute permeability of vacuum [電磁]真空絕對導磁率sugar permeability under vacuum 真空滲糖permeability of vacuum [電磁]真空磁導率;真空導磁率;繙譯 返回 vacuum permeability