ratio estimates 中文意思是什麼
ratio estimates
解釋
比值估計量-
This study was conducted to examine the interrelationship of 10 seed vigor traits in 12 wheat genotypes through variance, co - variance and path coefficient analysis, to determine broad - sense heritability, and to estimate genetic advance under selection. the genotypes showed significant difference for all traits, except for percentage of normal seedling. genetic correlation between conversion efficiency of seed reserve, electrical conductivity with other traits were not significant, showed that selection for any of them might be possible without hampering any other traits. however path coefficient analysis indicated that conversion efficiency of seed reserve, seed reserve utilization ratio have strong direct effect in affecting seedling weight, and that mean germination time has significantly negatively correlated in affecting gi. moderate to high estimates of broad - sense heritability, genetic coefficient of variation and expected genetic advance were obtained for electrical conductivity, germination index, mean germination time, seed dry weigh, seedling dry weigh, seed reserve depletion ratio indicating the possibility for improving these traits
本研究利用12個普通小麥品種對10個種子活力性狀的遺傳變異和相關研究，表明除正常幼苗百分率外，其餘種子活力性狀在品種間均存在顯著的差異.種子貯藏物質轉換效率、電導率兩個性狀間及與其它性狀均無顯著的遺傳相關，因此對他們的選擇不會影響到其它性狀.通徑分析表明幼苗干重主要取決于種子貯藏物質轉換效率、種子貯藏物質利用速率;發芽指數主要由平均發芽時間決定.電導率、發芽勢、幼苗干重、種子干重、發芽指數、種子貯藏物質消耗比率6個性狀表現中到高的遺傳力、遺傳變異系數和相對遺傳進展，指明通過遺傳育種手段改良這些性狀是可能的 -
Who has today revised its initial estimates of the case fatality ratio of sars
Who今天修訂了它關于sars病死率的最初估計。 -
On the basis of more detailed and complete data, and more reliable methods, who now estimates that the case fatality ratio of sars ranges from 0 % to 50 % depending on the age group affected, with an overall estimate of case fatality of 14 % to 15 %
通過更詳細和完全的數據以及更可靠的方法， who現在估計sars病死率的范圍在0 %到50 %之間，隨感染的年齡組變化，整體估計死亡率為14 %到15 % 。 -
First the author estimates the current situation of population aging in china ; then, analyzes and forecasts the degree of population aging and population structure in the period of 2001 - 2050 in china, calculates the standard coefficient of retirements income in china according to the theoretic methods provided by the author ' s research, estimating the path of the ratio of chinese social security fund to gdp. in the end the author gives some policy recommendation based on the research
首先是對中國老齡化現狀的分析；其次是對中國2001 - 2050年的老齡化及人口結構變動趨勢進行分析與預測；再次是依據本文研究出的理論對中國養老標準系數臨界點的測算；第四是對中國社會保障資金與gdp之比的未來增長路徑進行了數理推導，並進行實際測算；最後給出基於本文研究成果基礎上的相關政策建議。 -
Using this method, who estimates that the case fatality ratio is 14 % in singapore and 15 % in hong kong
用這種方法， who估計病死率在新加坡為14 % ，在香港為15 % 。 -
The interval estimates about the ratio of parameters in the two exponential distributions
兩指數分佈總體參數比的區間估計
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