The main economic properties of the species hybrid posterities of 8 cotton wild varieties from 83 portion of materials were analysed.
用对应分析法对8个棉花野生种的杂种后代共83份材料的主要经济性状进行了分析。
By comparing main properties of pipe with FWRPM, FRP pipe, steel pipe, Cast iron pipe and reinforce concrete make know technical economic superiority of FWRPM pipe and its broad developing prospects.
通过与玻璃钢管、钢管、铸铁管、混凝土管主要性能的比较，进一步阐明了该管道的经济技术优势和广阔的发展前景。
This paper deals with the proportion design, main properties, practical applications and economic benefit of building mortar admixed with adding Calcium fly ash.
本文介绍了用增钙粉煤灰配制建筑砂浆的配比试验，增钙粉煤灰砂浆的基本性能、工程应用及经济效益。
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