The strength analysis (especially elastoplastic analysis) of projectile on firing is one of the problems to be solved in projectile design.
弹丸发射强度的分析（尤其是弹塑性分析）是弹丸设计中有待解决的问题之一。
Rapier and projectile looms, which by design insert single picks, are ideally suitedfor pick - and - pick capability.
剑杆织机和片梭织机都是按每次引入一纬设计的，因此可以任意引纬。
This method is convenient and effective for the primary design of projectile shapes.
法所确定的尾锥角略有偏低，但仍可用于弹丸的初步设计。
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