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timbered shaft
meaning in English
木支护竖井
支架竖井
Related Words
timbered
timbered drift
timbered trench
half timbered
timbered raise
timbered tunnel
timbered stoping
timbered soil
timbered bottom
timbered area
timbered raise
timbered region
timbered soil
timbered stope
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