The technology is characterized by low construction expense, high efficiency, and high economic benefit.
该技术具有施工费用低、效率高、经济效益好等特点。
The most important advantage of this system is saving energy resource and low running expense.
此采暖系统的最大优点是节约能源，运行费用小。
The most important advantage of this system is saving energy resource and low running expense.
此采暖系统的最大优点是节约能源，运行费用小。
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