一元材积表的英文

• single entry volume table

• 一:    one
• 元:    first; primary
• 材积表:    yield table; volume table
• 三元材积表:    three-way volume table
• 材积表:    log rule; outturn table; volume table

例句与用法

1. The variable parameter taper equation , which was suitable to pin us elliottii plantation form changing law , was built with the sample wood datas on the basis of the research of about form shape in the tree mensuration , one - dimensional volume table , two - dimensional volume table , one - dimensional timber - produced rate table for timber assortment , and two - dimensional timber - produced rate table for timber assortment were complied based on the above
   摘要在树干形状研究的基础上，利用样木资料建立了一个适合湿地松人工林干形变化规律的可变参数削度方程，据以编制了一元材积表、二元材积表、一元材种出材率表和二元材种出材率表，这些数表经检验误差较小，精度较高，可在林业生产上推广应用。
2. This article uses fixation swatch founding for second - class investigation to obtain character of 207 sample trees , by which mathematics model of ground diameter volume table of chinese fir were deduced by regressing and imitating with five of equations respectively , and used unitary and binary volume tables of timber respectively to reckon an unitary ground diameter volume table , then compared the two ground diameter volume tables , so that a ground diameter volume table of chinese fir in yanping district was compilated to satisfy essentially the precision demand of forestry production , and to serve forestry production
   摘要利用二类调查布设的固定样地，收集207株样木调查资料，分别采用5个方程进行回归拟合，选出杉木人工林地径材积表的方程模型，利用一元材积表和二元材积表导算编制一元地径材积表，并进行比较，结果表明二元材积表导算地径材积表的方法精度较高，基本满足林业生产所需精度要求，可以提供林业生产服务。