Obtaining comprehensive and accurate information is very important in intelligent traffic system (ITS). In ITS, the GPS ......

1.1　一般资料　本组15例中男12例，女3例，年龄60岁～75岁，其中冠心病7例，慢性肺原 性心脏病2例，高血压性心脏病4例，心肌病、风湿性心瓣膜病......