Mine power supply must guarantee safety, reliability, economy, and good power quality and supply capacity.

矿井供电必须保证安全、可靠、经济，且有良好的供电质量和供电能力。

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Mine power supply must guarantee safety, reliability, economy, and good power quality and supply capacity.

矿井供电必须保证安全、可靠、经济，且有良好的供电质量和供电能力。

youdao