Meinten Sie:
person:("zhang zhixiang")
Auxiliary zinc alloy welding piston buffer offshore oil well machinery
Copper alloy offshore oil well power-assisted device achieving threaded piston shock absorption
Island wind generator of nickel-manganese spring of flanged valve
Shockproof wind power generation device with union valve aluminum alloy pistons
Aluminium alloy steel flange piston damping offshore oil well power-assisted equipment
Wind power generating facility adopting union valve copper alloy flange piston shock absorption
Tungsten-manganese alloy threaded spring offshore oil well power-assisted system
Offshore well power assisting device with chromium and manganese alloy welding springs
Island wind-driven power generation equipment with hoop valve and tungsten alloy springs
Nickel-manganese alloy flange spring offshore oil well power assistance device
Flanged valve chromium alloy union spring sea wind power generation platform
Welding valve zinc alloy piston buffered sea wind power generation instrument
UNIVERSAL JOINT STEERING TITANIUM ALLOY MANUAL-AND-PEDAL FORCE-JOINING ONE LEG-OPERABLE BICYCLE
Indoor unmanned aerial vehicle, indoor unmanned aerial vehicle system and control method
Unmanned aerial vehicle landing method based on improved YOLOv5 algorithm