Coal-rock mass strength in-situ testing apparatus
The present invention relates to the field of coal-rock mass strength testing technologies, and particularly relates to a coal-rock mass strength in-situ testing apparatus. The coal-rock mass strengthin-situ testing apparatus comprises a housing, a first guide mechanism, a cutting mechanism, and a s...
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Main Authors | , , , , , , , , , |
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Format | Patent |
Language | Chinese English |
Published |
15.11.2019
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Subjects | |
Online Access | Get full text |
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