用真空溅射镀膜技术在掘进机截齿上镀碳化钛膜，使其硬度明显提高，寿命延长3～5倍。
TiC membrane-plated on the pick of heading machine, the hardness is improved, and the work-life is lengthened for 3~5 times.
用真空溅射镀膜技术在掘进机截齿上镀碳化钛膜，使其硬度明显提高，寿命延长3～5倍。
TiC membrane-plated on the pick of heading machine, the hardness is improved, and the work-life is lengthened for 3~5 times.
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