Power distribution network loss rate (line loss rate) is a very important comprehensive technical and economic indicator in power enterprises.
配电网电能损失率，即线损率，是供电企业非常重要的技术经济综合性指标。
The results show that: in existing technical and economic indicator situation, the age at economic maturity of Chinese fir plantations is 17 years when the interest rate is 5%.
结果表明：在现有技术经济指标的情况下，利率为5%时杉木人工林经济成熟龄为17年。
The first grade index include pre-process interim evaluation indicator, technical interim evaluation indicator, economic interim evaluation indicator and social factors interim evaluation indicator.
一级指标包括前期工作过程评价指标、技术过程评价指标、经济效益评价指标和社会因素过程评价指标。
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