rpm
US /ˌɑːr.piːˈem/
UK /ˌɑː.piːˈem/
縮寫
轉/分鐘, 每分鐘轉數
revolutions per minute: a measure of the speed at which something is rotating
範例:
•
The engine was running at 5000 rpm.
發動機以5000轉/分鐘的速度運轉。
•
The record player spins at 33 rpm.
唱機以33轉/分鐘的速度旋轉。