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ARRANGEMENT FOR FORMING A MINE IN THE WATER SURFACE OF WORKING-FACE
ARRANGEMENT FOR FORMING A MINE IN THE WATER SURFACE OF WORKING-FACE
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机译:在工作面水面形成矿井的布置
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摘要
1.device for education тйт in акваторш slaughter, comprising compressor, воздуховьшускной elementвоздухоподающую pipe from the compressor to the воздуховыпускному element and support дл installation
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