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一种滚刀主动旋转的坚硬岩石巷隧道掘进机（俄罗斯）
- Release time:2023-09-01
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School Sign:
第一单位Disigner of the Invention:
LIU Songyong,zhuzhencai,杜长龙Type of Patent:
国内State of Patent:
专利授权Application Number:
RU2737613Service Invention or Not:
noApplication Date:
2019-09-12Authorization Date:
2020-12-01First Author:
jianghongxiang
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