基本解釋水蒸氣保護焊英漢例句雙語例句Using the heat of welding to vapour water, cooling rates are lowered on the weld bead and heat -affected zone.利用焊接時的加熱使水汽化，不僅使焊道而且使熱影響區(qū)的冷卻速度減慢。water-vapour welding更多例句