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
版或
版在背后所需的刨平和
致标准厚度的工作。
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.
铅版或版在背后所需的刨平和致标准厚度的工作。
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