金属钛具有比强度大、耐高温低温性能好、耐腐蚀等许多优异的性能，在航空航天、冶金、化工等领域的应用越来越广泛，但是由于现存的生产工艺复杂，导致生产成本很高，限制了其大规模
Shanghai will carry out 48 key projects in the field of new infrastructure in the next three years with a total investment of 270 billion yuan ($38.14 billion),
When the novel coronavirus epidemics was at its peak in China, Dou Huining, a 30-year-old civil servant in Tianjin, a port city in north China, supervised epide
During the recent May Day holiday, China saw a strong rebound in the tourism sec-tor, with 115 million domestic tourists flocking to attractions nationwide.
目的：测试不同配比的纳米羟基磷灰石(nHh)复合赖氨酸二异氰酸酯-甘油(LDIG)聚合物制备的新型骨修复材料的体外力学性能，比较材料在体外降解过程中溶液pH值，材料的吸水率和失重率