痕迹: mark; vestige; imprint; impression; trace; trail; print 短语和例子不露痕迹 make no sign; 一种古代文明的痕迹 the vestiges of an ancient civilization. 敌军留下了仓皇退却的痕迹。 the enemy's retreat left marks of haste. 岁月
Striated marks on magazine ' s curve part are stable to a certain extent and they are important mark features of guns recognition 弹匣弧形部擦划痕迹具有一定的稳定性，是认定枪支的重要痕迹特征。
