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quantitative variation中文是什么意思

  • 數(shù)量變異

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  • 例句與用法
  • Continuous variation ( quantitative variation ; multifactorial inheritance ) a form of variation in which the characters show continuous variation within a certain range of values
    連續(xù)變異:變異的一種類型,其性狀在一定的范圍內(nèi)是連續(xù)變化的。
  • There exists seasonal variation in the number of the species . judging from either all species of birds or that of warterbirds , the most important reason of seasonal and quantitative variation in every species lies in annual variation of the migratory birds
    衡水湖鳥類種數(shù)存在季節(jié)變化,無論是從鳥的所有種類看,還是從水鳥的種類看,鳥類物種數(shù)量季節(jié)變化的最重要原因是遷徙鳥類的周年變化。
  • The study shows that the early and late seed rains of constructive tree species in evergreen broadleaved forest at chongqing simian mountain had no activity . the bigger the seeds of the species and the earlier or later the seeds of the species matured , the higher the proportion of the seed rain damaged by animals . the quantitative variation of seed rain , active seed rain and seed bank did not take place at the same time . at early time , the number of seed banks of castanopsis fargesii , lithocarpus glabra , quercus myrsinrefolia , castanopsis plasyacantha , cinamomum subavenium . which own more active seed rain increased by geomitric series . the seed banks of castanopsis orthacantha and schima argentea were small , only survived a short time , and did not sprout next year . the quantitative dynamics of seed banks and their increasing or decreasing rates were decided by the proportion damaged by animals , dying speed of seeds and their resistance to pathogens and adverse circumstances , and the state of seed germination
    對(duì)重慶四面山常綠闊葉林建群種種子雨、種子庫(kù)的研究表明,建群種早期和晚期的種子雨無活力;種子偏早或偏晚成熟及大籽粒的樹種,其種子雨被取食的比例大;種子雨、有活力種子雨、種子庫(kù)三者的數(shù)量變化不一致;有活力種子雨量較大的栲、石櫟、小葉青岡、扁刺栲、香桂等,其種子庫(kù)密度在早期以近幾何級(jí)數(shù)的方式增長(zhǎng),元江栲、銀木荷種子庫(kù)小,存在時(shí)間短,翌年無一年生萌發(fā)苗;種子庫(kù)數(shù)量動(dòng)態(tài)、消減率動(dòng)態(tài)決定于種子被取食的強(qiáng)度、種子衰老的速度以及種子對(duì)病菌、逆境的抗性和種子萌發(fā)的整齊性
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