technical and economical benefit

• 技术经济效果

technical and economical benefit的用法和样例：

例句

1. Effort has been made on two main continuous ore-drawing and haulage systems and prominent technical and economic benefit have been achieved in China during the past ten years.
   我国经过近十年的努力，研究试验了两种采场连续出矿运矿的技术路线，并取得了显著的技术经济效果。