round spring meaning in English

朗德斯普林
圆弹簧

Iron and steel . round spring steel wires . patented drawn spring wires of hard unalloyed steels
钢铁.圆形弹簧钢丝.铅淬火拉拔非合金硬质弹簧钢丝
This machine is mainly used for round spring surface shot blasting , reinforcing and derusting . it will produce a compressional stress on the surface of the spring so as to enhance workpieces bending fatigue resistance
该系列主要用于圆形工件表面抛丸强化及除锈，使圆形工件表面产生压应力层来提高工件的弯曲疲劳强度。