The calotype could be made in series, and was thus the equivalent of an etching or an engraving.

碘化银纸照相法可以连续印刷，因此它等同于蚀刻或雕刻。

youdao

The calotype could be made in series, and was thus the equivalent of an etching or an engraving.

碘化银纸照相法可以连续印刷，因此它等同于蚀刻或雕刻。

youdao