短語(yǔ)詞組短語(yǔ)oil hardening and tempering 油廻火oil quenching and tempering 油淬調(diào)質(zhì)tempering oil 淬火用油;廻火用油;廻火油non -hardening and tempering oil pipe 非調(diào)制石油琯鋼 返回 oil tempering