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.
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。
Serveral of commonly used methods are photoprinting, photoengraving , mechnical engraving , and stencil.
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