词汇	tube heat exchange
释义	tube heat exchange 管热交换
随便看	cost of operation cost of operation approach Cost of Operation Division Cost of Opportunity cost of optimal path cost of organization cost of original production cost of other operating revenues cost of overhaul cost of overstock and stockpile items cost of ownership cost-of-ownership cost of owning cost of packaging and advertising cost of partly-finished goods cost of parts used cost of passenger kilometers cost of per inpatient Cost of Permanent Repairs cost of per square meter cost of per student Cost of per unit of cost of pipes of air-conditioner cost of placing an order cost of planting