英语natural radioactivity造句,natural radioactivity例句

Some Applications of Natural Radioactivity in Industry and Agriculture
天然放射性在工农业中的一些应用

Natural radioactivity level of some building materials in Guangzhou
广州市部分建筑材料产地天然放射性水平研究

The Research on the Evaluation of Urban Environmental Natural Radioactivity
城市环境天然放射性评价研究

Analysis on Natural Radioactivity Levels in Import Granite Building Materials
进口花岗岩石材中天然放射性水平检测分析

National database of environmental natural radioactivity level and its application
全国环境天然放射性水平数据库及其应用

Investigation of natural radioactivity level of the waters in Baotou Area
包头地区水体中天然放射性水平调查

The natural radioactivity measurement in building materials by γ ray spectrometry
建筑材料中天然放射性的γ能谱分析

Survey of natural radioactivity level of the waters in china ( 1983& 1990)
全国水体中天然放射性核素浓度调查（1983&1990年）

Natural radioactivity of the main buildings and various building materials in Jiangxi
江西省主要建筑类型及建筑材料中天然辐射的研究

Measurements of natural radioactivity in building materials with a Ge ( Li) spectrometer
用Ge（Li）γ谱仪测定建筑材料中天然放射性

Analysis of natural radioactivity level of the typical fly ash from guizhou province
贵州典型粉煤灰天然放射性水平分析

Environmental survey and assessment of natural radioactivity for a certain area of Jiangsu province
江苏省某地区天然放射性环境调查与评价

Between CEC and intensity of natural radioactivity, richness of radioactivity elements in source rock;
CEC与自然放射性强度及自然放射性元素丰度之间有正相关关系；

Investigation on Measurement Methods for Natural Radioactivity in Environmental Geological Survey of Qingdao City
青岛市天然放射性环境地质调查中测量方法探讨

The investigation and analysis on natural radioactivity nuclide specific activity of cement product in china
我国水泥产品天然放射性核素比活度的调查分析

To determine the natural radioactivity level of the rocks used to decorate in Shanghai market.
[目的]了解上海市场上常用的装饰用石材的天然放射性水平。

Natural radioactivity level of soils and building materials used in Hong Kong and resulting dose assessment
香港地区土壤和建筑材料中天然放射性水平及天然辐射所致居民剂量估算

The Investigation of Natural Radioactivity in Water Environment in the Lower Reaches of the Dadu River
大渡河下游地区地下水放射性环境水平现状调查

The methods of urban environment's natural radioactivity were investigated through abundances of experiments and field measurements.
通过大量的实验和野外测量，对城市环境天然放射性评价方法进行了研究。

Objective To investigate the total natural radioactivity levels in the soil of part area of Suzhou city.
目的了解苏州市部分地区土壤中总α、总β放射性本底水平及其变化情况。

Based on the natural radioactivity of potassium, the contents of potassium in solid potash fertilizer products were determined by radioactivity method.
基于钾的天然放射性，用放射性方法测定固体钾肥产品中的钾含量。

The use of one by one channel least square method for the analysis of natural radioactivity Nal ( Tl)-spectrum in soil
土壤天然放射性NaI（TI）γ能谱的逐道最小二乘法分析

To assess the radiological hazard of the natural radioactivity in soil, the absorbed dose rate and annual effective dose rate were calculated.
在测得放射性核素226Ra、232Th和40K的比活度此基础上，计算了距地面1m高处空气中γ辐射吸收剂量率和年有效剂量率，并对γ辐射外照射水平进行了评价。

This paper reports the investigation results of natural radioactivity level in river, lake, reservoir, spring, well and tap water in Qirighai Province.
本文报道了青海省江河、湖泊、水库、泉、井和自来水中天然放射性核素浓度的调查结果。

The contents of U, K, Th and other trace elements were determined by INAA, while Ra content was analysed by natural radioactivity survey.
用INAA测定U、Th、K及其它微量元素含量，用天然放射性测Ra含量。