文中在校准应用研究中采用田口方法，根据数字信号源的频率、调幅及调频试验典型值推导出全量程校准公式。
The Taguchi method is studied to derive calibration formulae of frequency and amplitude modulation of digital signal generator in whole range in this paper.
利用流动分析仪测定了烟田土壤中的全氮、全磷。
Total nitrogen and total phosphorus in tobacco field soil were determined with a Skalar flow analyzer.
秸秆还田增加了土壤全氮和无机氮含量。
Maize straw returning to the field can increase the soil total nitrogen and inorganic nitrogen content.
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