Back planning: Finishing operation to the back of a stereotype or an electrotype after backing up to make it smooth and to the required height.
铅铸版或电铸版在背后所需
和达致标准厚度工作。
Back planning: Finishing operation to the back of a stereotype or an electrotype after backing up to make it smooth and to the required height.
铅铸版或电铸版在背后所需和达致标准厚度工作。
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