fertility decline 中文意思是什麼

fertility decline 解釋
生育率下降
  • fertility : n. （opp. sterility）1. 肥沃，豐饒；肥力，肥（沃）度；（土地的）生產力。2. 【生物學】能育性，繁殖力。3. （思想等的）豐富。
  • decline : vi 1 下傾，下降；跌落；歪斜；（樹枝等）下垂，（頭）低下。2 衰落，衰老。3 墮落，退步；落魄。4 接近...
  1. Abstract : soil fertility of the plantations of paramichelia baillonii, betula alnoides, acacia mangium and altingia excelsa in tropical area of yunnan does not decline rapidly, and the physical and chemical properties of forestland are not affected greatly if the plantations can be managed properly

    文摘:在雲南熱區營造山桂花、西南樺、馬尖相思、高阿丁楓等4種人工林，只要經營得當，對林地土壤理化性質並不造成重大影響，不會引起地力迅速衰退。
  2. A woman ' s fertility begins to decline in her late 20s, drops off more sharply after 35 and plummets when she hits 40

    美國生殖協會指出，女性的生殖能力從20多歲後期開始下降， 35歲後下降更加明顯，到40歲時更是一落千丈。
  3. Using km mouse as a animal model for studies on the maternal age effec t, we compared quantity, quality and in vitro developmental competence of oocytes from different age groups of mice to elucidate the possible mechanism of the decline in ageing - associated fertility

    本實驗以昆明白小鼠作為研究母體年齡效應的動物模型，比較了不同年齡段小鼠卵母細胞的數量、質量及體外發育能力等，以探討與衰老相關生育力下降的機制。
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