high-efficiency and energy-saving 基本例句 高效节能 The indirect dryer is a new type energy conservative dryer.间接式干燥机是一种新型高效节能的干燥设备。 Application of a wide range of products and highly efficient energy-saving, low prices, production Hange is the preferred gas.产品应用范围广，高效节能，价格低廉，是企业生产焊割用气的首选。