相关数量,相关度量;
Results of a long-term fertilization experiment in Shenyang Agricultural University which started in 1988 to measure soil available Zn and its correlated factors were presented. The Zn availability of vegetable soil might be increased by long-term applying manure and N fertilizer.
菜田土壤肥料定位试验结果表明,长期施用有机肥和氮肥能够提高土壤有效锌含量,而且随着氮肥用量的增加,土壤中锌有效性增强。
This paper presents two methods of using FFT converter and correlated function to measure the phase difference between two periodical signals. And through practical application, it proves that the two methods are effective in measuring phase difference.
给出了用FFT变换和相关函数法来测量两个周期信号之间相位差的两种方法,并在实际测量中进行了应用,证明对测量相位差是行之有效的方法。
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