u et bolt膨径螺栓
spring U-bolt弹簧骑马螺栓;型螺栓
U-bolt washer形螺栓垫圈
U-boltU型螺丝;钢板U型螺栓;形螺栓;U形螺栓
U-bolt U形螺栓
pipe U-bolt排气管U型螺栓
U U-bolt U形螺栓
U-bolt washer U形螺栓垫圈
Spring U-bolt U型螺栓
N（名词） a metal bar bent into the shape of a U and threaded at both ends to receive securing nuts: used to secure leaf springs, ring bolts, shackles, etc U型螺栓