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.
环境背景值调查研究土壤标准物质的研制，包括ESS-1～4四种土壤标准物质。
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.
首先从陕北民歌生成的背景入手，阐述自然环境及历史条件对于陕北民歌的形成和发展的影响；
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.
本文首先对现代检测与故障诊断方法进行了综述，以某厂生产的驾乘式割草机、扫雪机变速箱为背景，论述了检测诊断系统硬件、软件、接口设计的一般原理和方法。

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.
FORBES: Studying Player Commitment To MMORPGs
The second study, ORAL-STEP, also with background methotrexate, gave the ACR-20 scores but not the ACR50 or ACR70 scores that are more important to clinicians.
FORBES: Key Questions Unanswered On Pfizer Drug
Israeli and American Jews wanting to live, work or study in the European Union are finding that a Polish background can be just the ticket: applications for Polish passports are soaring.
ECONOMIST: New thinking and old wounds around the Auschwitz death camp