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。
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。