短語(yǔ)詞組短語(yǔ)oil l quenching 油淬化;油急冷oil -quenching vacuum resistance furnace 油淬真空電阻爐horizontal vacuum oil -quenching furnace 臥式真空油淬火爐oil quenching tank 淬火油槽hot -oil quenching 熱油淬火 返回 oil quenching