Research and development of new drilling bit for roof bolt driller
3.
Galvanized mild steel roofing bolt and nut
4.
Technique of combined supporting of roof bolting with bar and wire mesh in coal roadway
5.
Expansion type roof bolt
6.
Application of the technology of roof bolting with bar and wire mesh in the zhangji coal mine
7.
Based on the rock pressure ' s characteristics of the pre - driven roadway , the rational support plan and parameters about roof bolting with bar and wire mesh are determined , and the manner of driven waste in place of coal was adopted
How to say roof bolting in Hindi and what is the meaning of roof bolting in Hindi? roof bolting Hindi meaning, translation, pronunciation, synonyms and example sentences are provided by Hindlish.com.
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