• Eventually, instead of printing from these directly, he employed them to stamp out intermediate dies which were then used as moulds to mass produce letter blocks made of a lead alloy.

    渐渐地不再直接使用这些小钢而是利用它们压制中等大小模具,用这些模具可以批量生产出合金字母块。

    youdao

  • Eventually, instead of printing from these directly, he employed them to stamp out intermediate dies which were then used as moulds to mass produce letter blocks made of a lead alloy.

    渐渐地不再直接使用这些小钢而是利用它们压制中等大小模具,用这些模具可以批量生产出合金字母块。

    youdao

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