常見例句The UN250 butt-welding machine adopts manual flash prewarming, hydraulic pressure upset mode, is suitable to weld large diameter and section weldment. UN250對焊機采用手動閃光預(yù)熱、液壓頂鍛的方式，適合焊接大直徑大截面的焊件。Prewarming system for financial affairs 財務(wù)預(yù)警系統(tǒng)engine prewarming 發(fā)動機預(yù)熱 返回 prewarming