The tags are printed in three layers, and one of the remaining hurdles to making the tags store more memory in less space is to improve the alignment of those layers, Cho says.
乔表示，这些标签分三层印刷。 现在要使标签面积减小而储存的信息量增大，尚需解决的难题之一就是，如何改进这些印刷层的排列。
The tags are printed in three layers, and one of the remaining hurdles to making the tags store more memory in less space is to improve the alignment of those layers, Cho says.
乔表示，这些标签分三层印刷。 现在要使标签面积减小而储存的信息量增大，尚需解决的难题之一就是，如何改进这些印刷层的排列。
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