【化】 操作手柄

operating account【会计】;trading account【会计】

ratio of non-operating profit to net sales【会计】

device for coupling the cylinder core and the bolt-operating member of cylinder locks

adjusting play in connecting-rod bearings, operating either automatically or not

stabilisation of operating point, power supply

batch-processing operating system【计】

STUD(S) for securing straps for operating windows

Standard operating procedure，SOP