It consists of three parts: fixed access cost, usage cost, congestion cost.
该定价策略由三部分构成：固定连接费、资源使用费及网络拥塞费。
Efficiency is high, usage cost is low, operation upkeep is simple, operation is reliable.
效率高、使用成本低、操作维护简单，运行可靠。
The feasibility of repetitive use of Fe-based shape memory alloy lock nut has been studied in order to lower the usage cost.
为了降低铁基形状记忆合金防松螺母的使用成本，探索了该新型螺母重复使用的可行性。
Currently, the research target of this realm is raising the drag reduction efficiency, at the same time, is increasing its anti-to shear function and lower the usage cost as far as possible.
目前，这一领域的研究目标是在不断提高其减阻效率的同时，尽量增强其抗剪切稳定性及降低其使用成本。
Currently, the research target of this realm is raising the drag reduction efficiency, at the same time, is increasing its anti-to shear function and lower the usage cost as far as possible.
目前，这一领域的研究目标是在不断提高其减阻效率的同时，尽量增强其抗剪切稳定性及降低其使用成本。
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