20s等于多少min"?"
200s等于( ) min
3km/min=()m/s 60m/min=()km/h
阅读理解. It's sunny today.Li Min
1.5h=()min=()s
单位换算:72Km/h=______m/s; 15m/s=______Km/h;180m/min=______
品质问题CPK=min((X-LSL/3s),(USL-X/3s))和CPK= Min[ (USL- Mu)/3s,(M
1rad/s=_rad/min
30r/min=____rad/s
300cm/min=____m/s
3000r/min=?rad/s
60π rad/min=?rad/s