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economic effect (1) |
Energy audit (1) |
energy efficiency (1) |
internal rate of return (1) |
net present value (1) |
ore-dressing and processing enterprise (1) |
return on investment (1) |
economic effect (1) |
Energy audit (1) |
energy efficiency (1) |
internal rate of return (1) |
net present value (1) |
ore-dressing and processing enterprise (1) |
return on investment (1) |