- difficulty index
- index of difficulty
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难度指数的英文
例句与用法
- Because of the low initial efficiency of industrial furnaces , it possesses such characteristics as low difficult index , essay to dig the potentiality and high potential in energy saving
同时指出由于工业炉窑初始效率低，节能难度指数较小，节能挖潜较易，节能潜力较大。