“radioactive materials”的概念、定义、翻译、参考文献-科学参考

单词	radioactive materials
释义	radioactive materials Encyclopedia 工学违禁物品释 radioactive materials放射性物品放射性物品有广义和狭义之分。广义的放射性物品泛指能够放射出射线的物品。狭义的放射性物品是指含有放射性核素且比活度和放射性总活度分别超过基本限值的物品。
随便看	close-packed direction close-packed plane close-packed structure close packing close path Green function closer close-range photogrammetry close reading close satellite closest approach closest approach point closest distance closest pair closest-pair query closest vector problem close time path Green function close-to-convex function close-to-critical close-to-elliptic equation close-to-natural forest management close to nature forestry close-to-open mapping closet play close-type sprinkler system close-up

科学参考收录了854744条科技类词条，基本涵盖了常见科技类参考文献及英语词汇的翻译，是科学学习和研究的有利工具。