1500m/s=?km/h
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1500m/s=?km/h1500m/s=?km/h1500m/s=?km/h1500*60*60=5400000m5400000/1000=5400km1500m/s乘以3.6=5400km/h应该
1500m/s=?km/h
1500m/s=?km/h
1500m/s=?km/h
1500*60*60=5400000m 5400000/1000=5400km
1500m/s乘以3.6=5400km/h
应该是1500*3.6=5400