HUMAN POWERED BOAT FOR PURIFICATION WATER AND WASTE AND SEAWEED COLLECTION
DRIVING AND CONTROLLING METHOD FOR BIOMIMETIC FISH AND BIOMIMETIC FISH
LOESS FEEDING DEVICE BUILTED IN THE UNMANNED CATAMARAN AND MANAGEMENT METHOD OF THE SAME
LOESS FEEDING DEVICE BUILTED IN THE UNMANNED CATAMARAN AND MANAGEMENT METHOD OF THE SAME
APPARATUS FOR COLLECTING WATER SURFACE FLOATING MATTERS
APPARATUS FOR COLLECTING WATER SURFACE FLOATING MATTERS
AQUATIC CONTAMINATOR ELIMINATION METHOD BY AQUATIC CONTAMINATOR ELIMINATION DEVICE
Soft Ground Moving Device of the Coastal Geological Survey and soil Drilling Work