Industrial field tests have shown that the status quo of large deformation and severe damage of the roadway in the gob-side entry driving has been improved.
现场工业性试验表明，沿空掘巷巷道变形大、破坏严重的现状得以改善。
Industrial field tests have shown that the status quo of large deformation and severe damage of the roadway in the gob-side entry driving has been improved.
现场工业性试验表明，沿空掘巷巷道变形大、破坏严重的现状得以改善。
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