1) Revisions of background noise values
背景值修正
1.
Revisions of background noise values at the boundaries of industrial enterpriese and analysis of measurement uncertainties;
工业企业厂界噪声监测的背景值修正与测量不确定度分析
2) revising background
背景值校正
1.
This paper is based on the basic principal of correlative analysis in controlling disturb, it extends this method through the several aspects of two-dimension interpolation, revising background, tracing the direction of abnormity and processing negative abnormity etc, in order to made it be fit for the complicated instance.
多剖面互相关处理方法是一种有效压制干扰的方法,本文基于互相关分析压制干扰的基本原理,通过二维插值、背景值校正、异常的走向追踪、及负性异常的处理等几个方面对该方法作了扩充,使其适合于野外更为复杂的情况,最后以实际例子说明该方法的有效性。
3) background noise modification
背景噪声修正
1.
There is controversy on background noise modification in railway EIA for noise,which has great influence on assessment methods,assessment results and mitigation measures of railway noise.
目前铁路噪声环境影响评价的背景噪声修正方法存有争议,对铁路噪声的评价方法、评价结果和防治措施的确定有很大影响。
4) background of revision
修订背景
6) background
[英]['bækɡraʊnd] [美]['bæk'graund]
背景值
1.
Usually there is a big error between the actual and the noise background value.
在工业企业厂界噪声实际监测中,对于差值小于3和不为整数时按照GB/T12349-90《工业企业厂界噪声测量方法》进行噪声背景值修正,常会与实际值产生较大误差。
2.
The geographic differential characteristics of the background of lead in soil in China has been studied based on the analysis of lead in soil of various cities.
本文通过对我国城市地区土壤铅背景值的分析，研究了我国土壤铅背景值的地理分异特征，并对其成因进行了探
3.
The contents of 17 nutritive elements,such as P,S,K,were measured using the ICPAES for 422 samples of soil collected in 0—35 cm surface layer in 72 counties or sections,Sichuan to study the characters of the background of nutrition elements.
采用单道扫描等离子发射光谱仪(ICP-AES)对四川茶区72个产茶县422个取样点0—35 cm土层中P、S、K等17种营养元素含量进行测定,分析了该地区茶园土壤的无机营养元素背景值特征。
补充资料：环境背景值监测
分子式：
CAS号：
性质：指对某一地区各环境要素(大气、水体、土壤、生物等)在未受污染情况下的化学物质正常含量范围的测定。应在未受人类活动直接影响、远离污染源、远离已污染区域的地方采集样品,采样点的布设和采样方法要保证样品具有充分的代表性。
CAS号：
性质：指对某一地区各环境要素(大气、水体、土壤、生物等)在未受污染情况下的化学物质正常含量范围的测定。应在未受人类活动直接影响、远离污染源、远离已污染区域的地方采集样品,采样点的布设和采样方法要保证样品具有充分的代表性。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条