The inner cracks of 430 stainless steel samples with adding various vanadium were gotten by drilling and compressing, and then thermal-healing experiment to inner cracks was carried out.
2
这种厚煤层钻孔机2000是不锈钢结构，钻头第一内部腿架的活塞杆和钻孔机支架都是不锈钢的。
The high seam drill 2000 is stainless steel construction and the cylinder rods of the 1st inner legs of the stinger and drill leg are stainless steel.
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