Percentage ratio of actual amount of bright sunshine to the total possible between sunrise and sunset 實際日照時間與日出日落間可能錄得的日照時間百分比。
General rotatory composed design with 5 factors was adopted for studying influence of factors on seedling bury percentage of naked root transplanting , and mathematical models between parameters of transplanting machine and seedling bury percentage were set up , and the influence of mechanism parameters on seedling bury percentage ratio was analyzed 為研究撓性圓盤式移栽機移栽機構各參數(shù)對秧苗埋苗率的影響,進行五因素二次通用旋轉組合設計試驗,建立了移栽機參數(shù)與秧苗埋苗率間的數(shù)學模型,并分析了各參數(shù)對秧苗埋苗率的影響效應。
The experimental results illustrate that " particle - concentration effects " for trace metals reported in literature are mainly due to the particle dynamics in the estuary . 4 . the adsorption percentage ratios of adsorptions and partitioning coefficients for trace metals in the changjiang estuary decease significantly with higher concentrations of elements 這一模擬研究結果說明,通常文獻報道的在河口混合區(qū)某些情況下的微量金屬固-液分配的所謂“顆粒物濃度效應”主要與河口現(xiàn)場泥沙顆粒的物理動力學過程有關。