发明公开
EP0238161A3 A backup sheet for backing a worksheet during a small bore drilling process 失效
在小钻孔过程中备份工作台的备份表

A backup sheet for backing a worksheet during a small bore drilling process
摘要:
A backup sheet for backing a worksheet during a small bore drilling process comprises a layer (20,22) of polyimide, fluorocarbon or high temperature polycarbonate material on at least one side of a core (10,12,14,16,18).
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