名词
中文翻译：钴弹丸
同义词：
['cobalt shell', 'cobalt projectile']
例句：
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1.The scientists used a cobalt pellet to test the new material's strength.
科学家们用一颗钴弹丸来测试新材料的强度。
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2. The missile was launched with a cobalt pellet as its warhead.
导弹发射时携带了一颗钴弹丸作为其弹头。
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3. The military experimented with different types of cobalt pellets for their effectiveness.
军方尝试了不同种类的钴弹丸，以评估它们的有效性。