A sheet of metal, plastic, rubber, paperboard, or other material prepared for use as a printing surface, such as an electrotype or a stereotype.
印刷版面准备用作印刷表面的一片金属，塑料，橡胶，纸板或其它材料，例如电版或铅版。
Develop the original study about metal to macromolecule material surface transnature.
开展金属对高分子材料表面改性的初步研究。
Most of electromagnetic wave are reflected by the surface of the metal bulk material, and the transmission can be neglected.
对于金属块体材料，电磁波的大部分能量在金属的几何表面被反射回去，其透射忽略不计。
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