试验表明：强力复合掏槽在特硬岩立井掘进爆破中应用效果良好；2。
The results show that mighty compound cutting can give a good effect of sinking and blasting in hard rock shaft, and sinking velocity adopted for 2.
少量易磨损件用特硬耐磨材质制成，体积小、重量轻、便于更换配件。
Some easy wear parts adopt hard and wear-resistant materials and have small bulk and light weight, so that it can be changed easily.
短电弧加工技术在对特硬、超强、高韧性等难加工材料的加工方面具有突出的优良性能。
Short arc machining (SAM) technique has special performance on machining hard machining materials which have great rigidity, intensity and tenacity.
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