闭膜 obturetor membrane 钝形的；钝头的 obtuse; obtusus 斑龟；中华花龟 Ocadia sinensis ; Chinese Stripe-necked Turtle; Green-headed turtle ..
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研究了尖头、钝头弹在侵彻机理上的差异。
The differences in the penetration mechanism between cuspidal and blunt projectiles are studied.
伤害度排在其次的很可能是钝的物体的，其他身体部分（例如头和锋利的物体）。
The next most likely methods were, in order, blunt objects, other body parts such as the head, and sharp objects.
本文给出钝头细长锥无粘、平衡和非平衡高超声速绕流流场的数值分析。
This paper presents a numerical analysis of inviscid equilibrium and nonequilibrium hypersonic flow past blunt-nosed slender cones.
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