“shield”的概念、定义、翻译、参考文献-科学参考

单词	shield
释义	shield Encyclopedia 理学气体辐射化学释 shield屏蔽体根据射线通过物质时被减弱的原理，将外照射剂量减少到剂量限值以下而专门设计、建造的保护性物体或装置。又称屏蔽物。理学地盾释 shield地盾克拉通中有前寒武纪结晶基底和高级变质岩大面积出露、周缘被有盖层的地台所环绕、平面形态呈盾状的地区。
随便看	topological convergence topological criterion topological cross-section topological cube topological current topological cycle topological defect topological defects topological definition topological degree topological-differential invariant topological dimension topological dimension of Lebesgue measurable set topological direct sum topological disc topological disorder topological division ring topological divisor topological divisor of zero topological dual topological duality topological dynamical system topological dynamics topological edge state topological elementary excitation

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