boron bearing microalloyed steel的意思|示意
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含硼微合金钢
boron bearing microalloyed steel的网络常见释义
含硼微合金钢 ... Bearing Quality Steel 滚珠钢 boron bearing microalloyed steel 含硼微合金钢 high nitrogen bearing austenitic steel 高氮奥氏体钢 ...