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Water surface garbage cleaning device based on water ecological restoration
Modified phenolic resin, preparation method thereof and rubber composition
Dustproof heat dissipation device based on new energy charging pile
Pure electric multifunctional train carriage leaking stoppage vehicle
Automatic control and emergency treatment system and method for liquid propellant filling
Method of ship ice resistance model experiment based on non-refrigerated model ice
Positioning detection device for subway power supply installation
Rapid and uniform unmanned aerial vehicle fertilization device for rice planting