s型曲线的英文

• s curve
• s-curve
• the sigmoid curve

• s:     the collar of S [SS, S ...
• 型:    mould; model
• 曲线:    curve; curved line
• s 型曲线:    s curve
• t型曲线:    t curve

例句与用法

1. At first , the author clearly defines intension of urbanization . then the author constructs the theory supporting of the thesis from six respects , including curve of s form of urbanization , location theory , structure theory , migration theory and polarization theory
   论文首先明确了城镇化和农村城镇化的内涵，然后从城镇化发展的s型曲线以及区位理论、结构理论、人口迁移理论、极化理论几个方面构建全篇的理论支撑点。
2. The study investigated aboveground growths of caragana korshinskii and artemisia ordosica planted in four modes , revealing that in different planting modes their densities , heights and canopy width and biomasses remained unchanged or tended to decrease slightly ; the young shoots of a . ordosica annually grew in a s - shaped cure and the young shoots of c . korshinskii grew fast in spring and grew slowly or cease to grow from july on ; the biomasses and leaf area indexes of c . korshinskii and a . ordosica annually varied in a double peak curve and there were 8 annual plants that invaded in the four planting modes and formed higher coverage ; the quadrat with only a . ordoska appeared to have obviously lower coverage and biomass that the other three quadrats
   摘要对腾格里沙漠东南缘2种人工植被柠条和油篙在4种配置方式下地上部分的生长动态进行了研究，结果表明：不同配置方式下它们的密度、高度、冠幅和生物量基本不变或略微呈下降趋势；油篙新梢的年生长动态呈s型曲线，柠条新梢春季生长速度较快， 7月份以后生长速度缓慢或基本停止生长；柠条、油篙地上生物量和叶面积指数的年变化均表现为双峰型， 4种配置方式下共有8种1年生植物人侵，并具有较高的植被盖度；同其它3个样地相比，纯油篙样地1年生植物的密度、盖度和生物量明显偏低。