仰视图
俯视图
以一点为中心，其他角度的视图
结构与视图
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![](https://wkrtcs.bdimg.com/rtcs/image?w=521.66&md5sum=e388696e037e5ca0b6931398e8fec06d&sign=7ea6a06f1b&rtcs_flag=2&rtcs_ver=3.1&l=webapp&bucketNum=75&ipr={"t":"img","r":"r_3","w":"521.66","h":"693.86","dataType":"jpeg","c":"word/media/image1.jpeg","imgOriW":242,"imgOriH":322})
![](https://wkrtcs.bdimg.com/rtcs/image?w=560.94&md5sum=e388696e037e5ca0b6931398e8fec06d&sign=7ea6a06f1b&rtcs_flag=2&rtcs_ver=3.1&l=webapp&bucketNum=75&ipr={"t":"img","r":"r_3","w":"560.94","h":"755.95","dataType":"jpeg","c":"word/media/image3.jpeg","imgOriW":230,"imgOriH":310})
![](https://wkrtcs.bdimg.com/rtcs/image?w=551.31&md5sum=e388696e037e5ca0b6931398e8fec06d&sign=7ea6a06f1b&rtcs_flag=2&rtcs_ver=3.1&l=webapp&bucketNum=75&ipr={"t":"img","r":"r_3","w":"551.31","h":"742.98","dataType":"jpeg","c":"word/media/image4.jpeg","imgOriW":230,"imgOriH":310})
![](https://wkrtcs.bdimg.com/rtcs/image?w=557.81&md5sum=e388696e037e5ca0b6931398e8fec06d&sign=7ea6a06f1b&rtcs_flag=2&rtcs_ver=3.1&l=webapp&bucketNum=75&ipr={"t":"img","r":"r_3","w":"557.81","h":"510.97","dataType":"jpeg","c":"word/media/image5.jpeg","imgOriW":480,"imgOriH":440})
![](https://wkrtcs.bdimg.com/rtcs/image?w=493.28&md5sum=e388696e037e5ca0b6931398e8fec06d&sign=7ea6a06f1b&rtcs_flag=2&rtcs_ver=3.1&l=webapp&bucketNum=75&ipr={"t":"img","r":"r_3","w":"493.28","h":"685.00","dataType":"jpeg","c":"word/media/image6.jpeg","imgOriW":360,"imgOriH":500})
![](https://wkrtcs.bdimg.com/rtcs/image?w=542.37&md5sum=e388696e037e5ca0b6931398e8fec06d&sign=7ea6a06f1b&rtcs_flag=2&rtcs_ver=3.1&l=webapp&bucketNum=75&ipr={"t":"img","r":"r_3","w":"542.37","h":"837.92","dataType":"jpeg","c":"word/media/image7.jpeg","imgOriW":330,"imgOriH":510})
