haulage roadway वाक्य
"haulage roadway" हिंदी में haulage roadway in a sentenceउदाहरण वाक्य
- The design of automatic air door in trackless main haulage roadway
- Analysis on roof - fall cause in 131211 haulage roadway in yueliangtan mine
- Optimized design of support parameter of main haulage roadway in jinjia mine
- Reinforcement of bolt and grouting in main haulage roadway in linhuan coal mine
- Double track haulage roadway