Looking back over the last three decades of Roman archaeology I find it difficult not to be impressed by the huge advances the discipline had made. The quantity of information collected has increased enormously. Romanists have enthusiastically embraced new archaeological technologies, and entire new subject areas landscape archaeology, palaeopathology, and underwater archaeology for instance ha...

The water jet formed after the collapse of bubble in near-field underwater explosion can cause serious damage to local structure ship, and formation is asymmetric, which makes it difficult measure its data experiment. At present, studies on pressure time history curves are still relatively rare. In order study characteristics jet, test 2.5 g TNT explosive at bottom fixed ...