单词	trace fossils
释义	trace fossils 遗迹化石
随便看	Helicopter Plane Commander helicopter platform Helicopter Position and Terrain Helicopter Position and Terrain Height helicopter powerline inspection helicopter power line inspection helicopter power loading helicopter power transmission system helicopter power utilization coefficient Helicopter Protected Zone Helicopter Reconnaissance Squadron Helicopter Remote Wind Sensor Helicopter Request Net helicopter rescue Helicopter Rescue Squadron helicopter rescue strop helicopter rig helicopter rigid frame system helicopter rotating blade helicopter rotor helicopter rotor blade Helicopter rotor concordant loading helicopter rotor dynamics helicopter rotor in hover helicopter rotors with flapping hinge