Two common methods are used in study of characteristics of voltage sags, which are the measurement on voltage quality and the stochastic assessment.
研究电压暂降特征的方法有电压质量监测和随机预估。
Based on the study of botany, ecology and environment aesthetics and also on technology and principle, a comprehensive assessment on the means and methods for it has been put forward.
植被绿化应从植物学、生态学、环境美学的角度出发，根据植被绿化的原则与技术标准，综合确定绿化的方式、方法。
To address the above issues, a study was launched on assessment methods of the changes of RJ quality (the freshness of RJ).
针对上述问题，本文展开了蜂王浆品质变化(蜂王浆新鲜度)评价研究。
To address the above issues, a study was launched on assessment methods of the changes of RJ quality (the freshness of RJ).
针对上述问题，本文展开了蜂王浆品质变化(蜂王浆新鲜度)评价研究。
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