The species and composition of birds in Cunjinqiao park of Zhanjiang city were investigated from December 2006 to April 2007.
2006年12月至2007年4月对广东省湛江市寸金桥公园的鸟类种类组成及其分布状态进行了研究。
The research findings of mechanical performance and the design and construction experiences of the aluminum alloy bridges in foreign countries are summarized and analyzed.
总结分析国外铝合金桥梁受力性能研究成果及设计与工程实践经验。