Adjustable multifunctional petroleum drilling machine moving guide rail
ALTERNATE STEPPING DEEP-SEA MINING SYSTEM AND METHOD BASED ON CLEAN ENERGY PLATFORM
An Investigation into the Use of Fluidic Devices as Gas Fuel Injectors for Natural Gas Engines
Anti-rope-falling and anti-noise protection device and method for aerial passenger mechanism
Anti-skid steel plate step of shield tunneling machine body
Apparatus and method for automatically adjusting the tension of a flexible guide rail
Apparatus and method for pre-loading mechanical constant-resistance single prop
Arbeitsfahrzeug mit mehreren Plattformen zur Tunnelwartung.