The mannequin's Styrofoam head, filled with cornmeal to simulate brains, was close to a professional-grade explosive, with a "quick match" fuse that burns almost instantaneously.
模拟人体的发泡胶，在模拟大脑里充满了玉米面，接近专业级的炸药，装有“速燃引信头”导火线，几乎在瞬间燃烧。
The piston head or "crown" is the top surface against which the explosive force is exerted.
活塞头部或“冠部”是整个活塞的最上端，处在燃烧室里要承受爆炸燃烧产生的力。
The piston head or "crown" is the top surface against which the explosive force is exerted.
活塞头部或“冠部”是整个活塞的最上端，处在燃烧室里要承受爆炸燃烧产生的力。
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