What are the materials of rigid tube?
人气：478 ℃ 时间：2020-04-12 19:05:35
解答
What are the materials of rigid tube?
硬管是什么材料做的?
硬管用什么材料构成的?
...
供参晕啊。。就是想问它使用什么构成的。。。。飞机上的
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