常见例句双语例句Natural gas driven VM cycle heat pump works according to the theory of closed VM refrigeration cycle using thermal as power with regenerators.天然气驱动VM循环热泵按VM热动力闭式气体回热制冷循环原理工作，其应用对于能源和环境的可持续发展具有重要意义。 返回 vm cycle heat pump