这样就制成了一种三层金属材料。
三层金属版用在层不同金属造成，能作极大印量的柯式印版。
Tri-metal plate Offset plate for very ling run work where three layers of metal are used in manufacturing the plate.
所述 方法是：在硅基板的表面采用金属1、金属2和金属3三层金属布线；
The method is as follows: the surface of a silicon substrate adopts the three-layer metal wiring of metal 1, metal 2 and metal 3;
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