wax engraving वाक्य
"wax engraving" हिंदी में wax engraving in a sentenceउदाहरण वाक्य
- The first Rand McNally map, created using a new cost-saving wax engraving method, appeared in the December 1872 edition of its " Railroad Guide ".
- Johnson began experimenting with melted down Edison cylinders in an attempt to bring the sonic benefits of the Bell-Tainter method of wax engraving to lateral-cut gramophone discs.