background study

基本解释

Four soil reference materials(ESS1~4) have been developed and applied in national environmental background study project as a tool of qualitative assurance & qualitative control.
環境背景值調查研究土壤標準物質的研制，包括ESS-1～4四種土壤標準物質。
First of all, based on the background study, the affects from the natural environment and the history to the formation and development of the folk song of northern Shaanxi province are demonstrated.
首先從陝北民歌生成的背景入手，闡述自然環境及歷史條件對於陝北民歌的形成和發展的影響；
This paper introduces modern test and fault diagnosis methods and then discusses common principle and method for design of its hardware, software and interface with the background study on lawn mower.
本文首先對現代檢測與故障診斷方法進行了綜述，以某廠生産的駕乘式割草機、掃雪機變速箱爲背景，論述了檢測診斷系統硬件、軟件、接口設計的一般原理和方法。

Before getting into some of the specific aspects of the study, some relevant background information provided by study co-author Lawrence Sanders, PhD, professor of management science and systems in the UB School of Management.
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