This research has some reference value on hypersonic projectile material selection and shape design.
本文的研究对高超声速弹丸材料选择和外形设计具有一定的参考意义。
To design training material, To perform training on the database use.
设计培训资料，对数据库的使用进行培训。
To design training material, To perform training on the database use.
设计培训资料，对数据库的使用进行培训。
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