The nature of soil not only affects the output and quality in the production of agriculture, forestry, animal husbandry and fishery, but also restrains the utilization mode of soil resources.
土壤属性不仅影响农、林、牧、渔业生产的产量和质量，而且在很大程度上制约着土壤资源的利用方式。
The dual-band filter consists of two dual-mode resonators with rectangular- loop perturbation on different layers, which need only single input and output.
该双通带滤波器包含两个方环形谐振器，它们位于不同层，并利用同一输入输出耦合结构实现双通带滤波器。
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