power-assisted steering
noun/ˌpaʊər əˌsɪstɪd ˈstɪərɪŋ/
/ˌpaʊər əˌsɪstɪd ˈstɪrɪŋ/
(British English) (also power steering British and North American English)
[uncountable]- (in a vehicle) a system that uses power from the engine to help the driver change direction
动力转向系统