Two-stage parachute bay structure for ammunition parachute
Vibration absorbing mechanism for anchor gear support and operating method
Mechanism and method for implementing variable-section installation of base joint for tower crane
Automatic lifting type three-directional adjusting running tension platform
Test device capable of starting parachute to work in delayed manner after throwing
Braking device with active braking and parking braking functions
Vehicle upshift control method and device, electronic equipment and readable storage medium
POWER CONTROL METHOD, DEVICE AND SYSTEM, AND HYBRID POWER DIESEL MULTIPLE UNIT
Bionic crawling robot and autonomous control method thereof