KEY TECHNOLOGY OF SPLIT-TYPE SLITTING DRILL RIG WITH DOUBLE-ARM FOR MINE

In order to improve the construction efficiency of pre-splitting blasting borehole Course a pied - Homme - Chaussures - Sentier in the technology of gob-side entry retaining by the way of roof cutting and pressure release, a split-type double-arm seam cutting drill for mining is developed, which is small in volume, flexible in movement, strong in t

Television formats (e.g., The Masked Singer ) have been traded for 20 years without firm legal protection.This paper performs Footwear a political economic analysis of this uncertainty in the legal protection of formats by examining television format copyright infringement disputes in the United States, the Netherlands, Australia, and Brazil in the