We can also adopt sand shell moulding or metal mold casting as for allotype castings.对异形铸件,还可用砂型铸造或金属型铸造.Authors mainly introduce quality control of allotype caisson in prefabrication, float transport and installation pr...
He shook his head and wiped his tears with a tissue.他摇摇头，用纸巾擦掉眼泪。The tissue is examined microscopically to rule out or confirm cancer.利用显微镜检查组织，以排除或确认癌变。The virus remains dormant in nerve tissue until activated.病毒潜伏于神经组织...