| 释义 |
sid·er·og·ra·phy
\ˌsidəˈrägrəfē\ noun
(-es)
Etymology: International Scientific Vocabulary sider- + -graphy
: the art of engraving steel; especially : a process of multiplying facsimiles of an engraved steel plate by rolling over it when hardened a soft steel cylinder and then rolling the cylinder when hardened over a soft steel plate |