| 摘要 |
<p>The system has a casing designed as a lattice or a tear-resistant film and made of plastic with low temperature, metal and ceramics. A device is provided for manipulation of rock, a transporting equipment and a borehole wall, which is made of metal and plastic and exhibits an elliptical, square, polygonal form. An aggregate is provided for achieving water pressure that is necessary for drilling. Holes are provided for locking segments of the borehole wall, and rack gears are made of metal. The borehole wall enables driving of the drilling system in an upward and downward manner.</p> |
