短語詞組短語hardening g and tempering 調(diào)質(zhì)oil hardening and tempering 油回火Hardening and Tempering Standard 調(diào)質(zhì)規(guī)范non -hardening and tempering oil pipe 非調(diào)制石油管鋼hardening and high temperature tempering 調(diào)質(zhì) 返回 hardening and tempering