The closed system of bomb plus water bath has a constant volume and is thermally insulated.
放射性物质容器弹和水槽组成的封闭体系具有恒定体积，而且是绝热的。
It was the deadliest bomb attack on American soil for seven years, until the Bath School disaster. 33 were killed and 400 persons were injured by the blast.
在七年后的巴斯灾难之前是在美国土地上发生的最致命的一次炸弹袭击，33人遇害，400人在爆炸中受伤。
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