顶板支护 meaning in Chinese
back timbering
barring
roof holding
roof support
roof timbering
Examples
- Study and practice on supporting technique in coal seam roof
煤层顶板支护技术的研究与实践 - Roof supporting of thick coal drift in sitai mine
四台矿厚煤层综采顺槽及切眼顶板支护问题探讨 - Stydy on broken - roof support technology
破碎顶板支护技术研究