A city official said radiation levels in Koriyama are now safe, that they have decreased by time and clean-up efforts.
一位城市官员表示，郡山市的辐射水平现在是安全的。经过时间推移和清理措施，辐射水平已经有所降低。
The constituent and main features of electrothermal floor radiation he ating system are concluded as: being comfortable, clean, healthy and hygienic;
简述了电热式地板辐射供暖系统的构成，系统的主要特点为：舒适、清洁、保健、卫生；有效地节约能源，具有可观的节能效益；
METHODS: The 24 mice (clean class) were randomly divided into 3 groups: normal group, radiation injured group and ligustrazine group.
方法：正常24只清洁级昆明小鼠随机分为3组：正常组、生理盐水组和川芎嗪组。
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