case hardened 表面硬化的...case-hardened a.表面硬化的,无情的...hardened and tempered steel 调质钢...hardened oil 硬化油...be hardened to... 对...变得无动于衷...hardened criminal 不知悔改的罪犯...hardened pelvis 硬性骨盆...hardened and tempered steels 调质钢...
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