12.5mm=1.25 × ____ m=1.25×____ km
12.5mm=1.25 × ____ m=1.25×____ km
12.5mm=1.25*( )m=1.25*( )km 10nm=1.0*( )cm=1.0*( )m 0.015km=
0.4km= m= mm= nm
2x10的3次方m= km= mm
signing files=____ ____ ____ ____files
相对原子质量=____+____
英语翻译I'm ____ ____ ____ ____ ____ now.
200000m= km,500000cm= m,0.0035mm= m,0.005m= km,0.007μm= m,0.
0.03m= cm?5km= 36m= mm?4mm= μm?20nm= 8mm= 0.09μm= nm?8μm= mm
wu li ti(1)1.5km=( )m=( )cm=( )mm(2)43000nm= ( )um=( )mm=( )
70dm= mm 7*10的负五次方= mm 360s= h 1500m= km
若2^m=3,3^m=5,则6^m=____,9^m=____.