fertility trend 中文意思是什麼
fertility trend
解釋
出生率變化趨勢-
The approximate trend of the change of soil in the plantations of four species is that soil fertility declined slightly from 1993 to 1995, and rose a little from 1995 to 1997
4種人工林土壤變化的大致趨勢是： 1993 - 1995年肥力大多略呈下降趨勢， 1995 - 1997年有所上升。 -
But, because china ' s current population and family planning programmes and policies have won understanding and support from the people, the fertility level of the population has steadily reduced and the trend of overrapid population growth has been effectively checked along with the country ' s economic and social development
但是，由於中國現行的人口與計劃生育方案和政策得到了人民的理解和支持，隨著中國經濟、社會的發展，人們的生育水平不斷下降，有效地抑制了人口過快增長的勢頭。 -
Using the methods of summation by giving a mark and main component analysis, the result indicates that the methods of main component analysis is identical better with reality than the methods of summation by giving a mark, the differentiation trend of types of site conditions of cornus officinalis chiefly receives the accuse in soil fertility factor and the general configuration of the earth ' s surface factor
結果表明：主分量分析法與打分求和法相比，以主分量分析法劃分的類型與實際吻合更好；山茱萸立地條件類型的分化趨勢主要受控于土壤肥力因子和地貌因子。
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