In the detection of deep high-pressure water hazard of coal mine, down-hole electromagnetic method plays a unique role.

在煤矿深部高压水害隐患探测中，井下电磁法发挥着独到的作用。

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In the detection of deep high-pressure water hazard of coal mine, down-hole electromagnetic method plays a unique role.

在煤矿深部高压水害隐患探测中，井下电磁法发挥着独到的作用。

youdao