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siderography

/.sidә'rɒgrәfi/

📖 中文释义

  1. n. 钢凹板雕刻术
📘 English Definition（英文释义）
  1. n. The art or practice of steel engraving; especially,
  2. the process, invented by Perkins, of multiplying facsimiles of an
  3. engraved steel plate by first rolling over it, when hardened, a soft
  4. steel cylinder, and then rolling the cylinder, when hardened, over a
  5. soft steel plate, which thus becomes a facsimile of the original. The
  6. process has been superseded by electrotypy.
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