subshaft例句
Combination of sheet roll with subshaft, producing apparatus thereof, packaging apparatus thereof, and production system thereof
Project report - pillar mining at No. 1 and 2 sub-shaft on Kloof Gold ...
Research of prevention and control technology of water during the construction of Changhua coal mine sub-shaft
Optimization Design and Management Study to the Tramcar Yard on the Sub-Shaft Mouth
Method for determining a twist angle
CRUSHING APPARATUS FOR MASSIVE CONTAMINANT IN MUDDY WATER AND CONTROL METHOD THEREOF
Oblong object holder
Resilient shaft hanger
Ground control problems during the sinking of a deep level subshaft : Leach, A R Proc Symposium on Rock Instability Problems in Mine...
Switchgear and switchgear operating mechanism
