bó / wù / guǎn / de / zhǎn / pái / shuō / míng / le / dá / mǔ / dàn / zài / lì / shǐ / shàng / de / shǐ / yòng / qíng / kuàng博物馆的展牌说明了达姆弹在历史上的使用情况。The museum display explained the historical use of dumdum bullets.