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。
According to this situation the performance of the heading machine will be increased through making some improvement on the cutting heads and the heading machine will be more convenient and efficient.
根据这种情况，对掘进机纵横两种截割头提出了一些改进，以此提高掘进机的性能，使得掘进机的工作效率更高，使用时更加灵活方便。
According to this situation the performance of the heading machine will be increased through making some improvement on the cutting heads and the heading machine will be more convenient and efficient.
根据这种情况，对掘进机纵横两种截割头提出了一些改进，以此提高掘进机的性能，使得掘进机的工作效率更高，使用时更加灵活方便。
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