- 掘进: driving; tunnelling; drillin ...
- 平巷: drift; level; heading; stulm ...
- 平巷掘进: drifting; entry driving; gallery driving; level cutting; tunnel heading
- 平巷掘进机: entry driving machine; header ri er; header ripper; ripper
- 开拓平巷掘进: development drifting
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