auger stem वाक्य
"auger stem" हिंदी में auger stem in a sentenceउदाहरण वाक्य
- Under the function of big pressure and dynamic load , the grains may be moved which may cause the soil body distortion . at present , the relatively ripe methods of drill in gravel layer are mostly double - wall drill pipe reverse circulation drilling , auger stem breast wall drilling and down - the - hole hammer follow down drilling