Chocolate was regarded as jewelry and jinni of Maya, and it is the only one which still countermark the former brilliance of Maya.

巧克力被玛雅人视为珍宝和神灵，只有它依然刻印着玛雅王国的往日辉煌。

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This paper presents a correction algorithm according to the countermark characters of cylinder mark printer and correlation provisions of 《Gas Cylinder Safety Supervision Rules》.

针对钢瓶刻印机的刻印特点和《气瓶安全监察规程》中相关规定提出了一种校正算法。

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