He collected specimens of all kinds of rocks and minerals.他采集了各种岩石和矿物的样品." Finest specimens of human molars, " he informed me.“ 用精选的真人臼齿做的. ” 他告诉我.I stayed at Columbia for four years, analyzing specimens.我在哥伦比亚呆了四年, 在那里做...
The variations in microstructure of these specimens after annealing are investigated by Mssbauer hyperfine parameters.用穆斯堡尔谱超精细参数研究微观结构随退火温度的变化.The toughness, fractograph and microstructure of the failed die specimens ha...