[] ( TCO) () a method of calculating the costs involved in buying and using a product or service which includes the cost of buying it and other costs such as ordering, delivering, keeping it in good condition, etc. 总体拥有成本◆The new system will give customers improved software performance and a lower total cost of ownership. 新系统将使顾客的软件性能得到改进，并降低总体拥有成本。