Calcium and other nutrients intakes we re assessed by a food-frequency method.
钙和其它营养素摄入量用食物频率法评价。
At last, advantages and disadvantages of these methods were analyzed and adjusting frequency method was discussed.
最后,分析了各种方法的优缺点,讨论了调整输出信号频率的方法。
Therefore HHT was a kind of new time-frequency method for analyzing and processing the blasting vibration signals.
分析认为HHT是一种全新而更优越的分析与处理爆破震动信号的时频方法。
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