The effect of yield and grain protein content with soil water content and nitrogen ( or nitrogen and p2o5 ) was described by isopleth 用極差變換將產(chǎn)量和蛋白質(zhì)含量理論值標(biāo)準(zhǔn)化,其標(biāo)準(zhǔn)值曲線的交點(diǎn)即為二者的最佳結(jié)合點(diǎn)。
4 . practical meteorology : isopleths analysis ; streamline analysis ; use of tephigram ; interpretation of weather charts ; weather observations ; codes in common use ; principles and exposure requirements of weather instruments ; telecommunications procedures 4 .實(shí)用氣象學(xué):等值線分析流線分析溫熵圖應(yīng)用天氣圖解釋天氣觀測通用電碼氣象儀器原理及安裝條件電信程序。
The hybrid algorithm raises the convergence rate of the conjugate gradient method and solves the problem for which the convergence rate of the steepest descent method get slower when the isopleth of goal function is oblong 這種混合優(yōu)化算法結(jié)合了共扼梯度法和最速下降法產(chǎn)生搜索方向,既提高了共扼梯度算法的收斂速度,又解決了目標(biāo)函數(shù)的等值線是扁長橢球時(shí),最速下降法下降緩慢的問題,具有收斂速度快、收斂范圍大、適應(yīng)面廣等特點(diǎn)。
The paper applies sdm in drawing the map of pollution areas . by synthesizing contaminated factor , saturated esdd and damp factor in pollution areas , the equal saturated esdd is presented . the isopleth map for equal saturated esdd is drawn by grid method based on kriging regression , and the isopleth map is regarded as the map of pollution areas 通過將影響污區(qū)分布的積污因素、鹽密指標(biāo)、濕潤因素這三種因素綜合為等效鹽密,運(yùn)用克里金法實(shí)現(xiàn)等效鹽密的插值,最終通過網(wǎng)格法繪制等值線圖實(shí)現(xiàn)了電網(wǎng)污區(qū)分布圖計(jì)算機(jī)自動(dòng)繪制。
英文解釋
a line drawn on a map connecting points having the same numerical value of some variable 同義詞:isogram, isarithm,