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为提高速射武器身管的射击寿命,降低武器的成本,美国陆军武器局提出了用复合金属挤压和旋转锻造枪管的研究课题。此项研究是由美国巴特莱研究院太平洋西北研究所在美国
In order to improve the shooting life of rapid-fire weapons and reduce the cost of weapons, the United States Army Armament Bureau has proposed a research project of squashing and rotating forging the barrel with composite metal. This study was conducted by the American Institute for Pacific Rim Research at the Butler Institute in the United States