自行火炮 zìxínghuǒpào self-propelled gun Origin Definitions Defs Strokes Stroke Words Sentences Sents 自行 zìxíng verb move by one's self To move or propel oneself, often used in technical or mechanical contexts火炮 huǒpào artillery cannon; gun; heavy weapons with a caliber larger than 2 centimeters that fire explosive shells