Roof control is key management of opening up coal seam with potential outburst in crosscut.
顶板管理是石门揭露突出煤层过程中的管理重点。
The process of project management, from inception to implementation, will be all under one roof.
项目管理的流程，从构思到执行，都将在一个屋檐下。
The process of project management, from inception to implementation, will be all under one roof.
项目管理的流程，从构思到执行，都将在一个屋檐下。
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