气泡发生器是微泡浮选的关键.The bubble generator is the key equipment of microbubble floatation.微泡的减压, 冷水而艰巨的自动调整潜水.Automatic adjustment of decompression for microbubbles , cold water and strenuous dives.目的探讨超声破坏微泡造影剂对心肌细胞膜通透性的影响.Obje...
Garrisons established to protect colonies acquired in the Spanish American War and kindred annexations.建立起卫戍部队以便保护在美西战争中占领的殖民地和兼并的西班牙领地.Britain’s oversea colonies英国的海外殖民地The caterpillars feed in large colonies.毛毛虫总是成群进食。...