Then based on the analysis of three current sampling methods, a bridge sampling method with low cost and easy implementation is adopted to obtain the current information.
其次，对三种电流采样方法进行分析，确定采用成本低、易于实现的桥臂电流采样方法获取定子电流信息。
China's first census in 10, five-year one percent population sampling survey (called on the census), due to China's great population base, the determination of the total fertility rate is never easy.
我国10年一次人口普查，五年一次1%人口抽样调查(人称小普查)，由于我国人口基数极大，对于总和生育率的确定绝非易事。
This utility model's structure is simple, This utility model has simple structure, may regular be used for detecting coal fines fineness, and the sampling method is convenient, easy and accurate.
本实用新型结构简单，可定期检测煤粉的细度，取样方便、轻松、准确。
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