碘化银纸照相法可以连续印刷，因此它等同于蚀刻或雕刻。

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

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如今，利用放射性碳素测定年代法，科学家已确定这一用乳齿象牙雕刻而成的长矛尖端的精确年代。

Scientists have now accurately carbon-dated the sharp tip that itself carved from mastodon bone.

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通常所采用的几种储存方法是：影印法、照相蚀刻、 机械雕刻和模板。

Several of commonly used methods are photoprinting, photoengraving, mechanical engraving, and stencil.

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