cold iron spring 中文意思是什麼
cold iron spring
解釋
含鐵冷泉-
Iron and steel. wire rods made of unalloyed steel for the manufacture of high resisting cold - formed spring wires. types
鋼鐵.製造高應力冷成形彈簧鋼絲用非合金鋼線材.類型
分享友人