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extinct natural radionuclides 消失的天然放射性核素
extinct natural radionuclide 死灭天然放射性核种
A report is made on the inspection results of the content of natural radionuclides of decorative stone and glazed tiles commonly used in Xianyang. 报道了咸阳市常用装饰石材及彩釉砖样品中天然放射性核素含量的调查分析结果,并据国家建筑材料放射性核素含量最新标准进行分类分析。
As soil and building materials contain these natural radionuclides, the dose we received therefore depends on the geological composition of the place we live and the building materials we use. 地壳土壤及建筑材料内,都含有这些天然的放射性核素,因此我们吸收到的天然辐射剂量与所在地区的土质成份有关,亦与我们居所的建筑物料有关。
Nothing could rekindle her extinct passion. 她激情已逝，无从心回意转。
My hope of getting some employment was extinct. 我要找到工作的希望落空了。
The passenger pigeon is extinct. 旅鸽已绝种。
It is natural for a cat to catch mice. 猫捉老鼠是本能。
Dinosaurs have been extinct for millions of years. 恐龙已绝种几百万年了。
It's natural to slack2 off towards the end of a hard day's work. 一天紧张工作快结束的时候有些放松是自然的。
Many natural materials are becoming scarce. 许多天然原料越来越少。
Keywords Decorative materials;natural radionuclides;classification;Xianyang city; 关键词装饰材料;天然放射性核素;分类;咸阳;
Our motherland flows with natural resources. 我们祖国蕴藏着丰富的天然资源。
Events took their natural course. 事态依自然进程发展。
She has a natural wave in her hair. 她的头发自然卷曲。
Magnetism is a natural phenomenon. 磁力是一种自然现象。
A genus of extinct, large, flightless birds native to Madagascar. 象鸟，隆鸟一种不会飞的巨鸟，产于马达加斯加岛，现已绝种
It is difficult to be natural when one is tense. 人在紧张的时候很难泰然自若。
Cs Specific activity and distribution of natural radionuclides and 137Cs in surface sediments of the northeastern South China Sea 南海东北部表层沉积物天然放射性核素与137
The egoism of an artist sometimes seem natural. 艺术家的自负有时看起来是自然的。