The experimental study results are available for reference in the diffuser design and the resistance reduction of the diffuser in the productive mines.
实验研究结果可供扩散塔的设计和生产矿井扩散塔的减阻工作参考。
The pathogenic characteristics of the main productive varieties and resources are studied. This report also presents concrete objectives for variety deployment and selection of resistance resources.
并就新小种类型对目前主要生产品种和抗源的致病特点进行了研究，为品种布局和抗源选用提供了具体目标。
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