1、
It also a troubleshooting analysis of the undercarriages retractile system.
还包括一次起落架收放系统的故障分析.
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2、
The lens is made of cell-shaped plastic which has the beautiful retractile effect.
采用蜂窝状塑胶做透镜,其表面花纹达到优美的折射效果.
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3、
4、
5、
