effective production front side
effective production front side
有效生产正面
以上为机器翻译结果，长、整句建议使用 人工翻译 。
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At present, the pre detection technique of DC method to detect the disaster of the front side of the working face has become one of the effective methods in the coal mine production safety.
目前直流电法超前探测技术探测掘进工作面前方灾害性水文地质异常体已成为煤矿生产安全方面有效手段之一。
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