JAPANESE products and billboards advertising them, are seen everywhere in China’s larger cities, other than Nanjing tha......

根据电解液流体辅助激光打孔加工的特点,建立了加工过程的热力学模型,模型考虑了激光束空间分布和材料相变潜热对孔的影响,给出了......

【正】 Beijing by night reveals a different side of the smog-ridden, traffic-jammed, mad rush of a capital we see by day......